CERTITUDE AND SKEPTICISM


v    10/10/2011

F    Abstract

Since the dawn of modernity, skepticism has been a recurrent issue in the unfolding of philosophical consciousness in the philosophical tradition. The presence of skepticism in this context provokes diverse response.

Epistemology as First Philosophy express an ideal of philosophy which takes as its primary task the justification of knowledge and by proxy the defense of the ideal of philosophy as love of wisdom. This orientation, that is, the ideal of Epistemology as First Philosophy defines the odyssey of philosophical consciousness from Descartes to Hegel. The presence of skepticism in philosophy generates a destructive influence as far as the status of Epistemology is concerned. The problematic status of Epistemology in contemporary time is the ideal of justification.

The failure of the ideal of justification is the failure of Epistemology itself. This ideal of philosophy, seeing philosophy as love of wisdom, invites a deconceptualisation of the nature of philosophy. The negative influence of skepticism is a factor in the emergence of philosophical current in the 20th century such as Phenomenology, Deconstructionism, and Existentialism. All these philosophical current thrives in philosophical skepticism.

On the one hand, the presence of skepticism in philosophy encourages a massive development of systematic philosophy but in the contemporary settings, the problem of skepticism provides a pivot for systematic philosophy which renders the nature of philosophical consciousness low.

Now our task in this course having said all this is to explore the various reactions generated by the presence of skepticism in relation to the status of epistemology as it relates to philosophy itself. Specifically, we shall focus on such theories as Kant, Rorty, MacDowell, and Maritain. In exploring their various contributions to the problem of knowledge presupposes the entire development from Descartes to Hume.

After the preliminary attempt, we shall turn our attention to the brief discussion or the brief situation before Kant focusing on the Cartesian and reaching its consummation in Hume. We shall focus on Kant, Bradley, MacDowell; Maritain shall be attended to respectively. We shall also consider the general implications for their various positions on the nature of philosophy.

F    Course outline

1.                  Preliminaries
2.                  The problem of justification in context.
3.                  The Cartesian initiative and its consummation in Hume
4.                  Reid’s critique of the ideal system
5.                  Kant and the External World
6.                  Hegel and the External World
7.                  Bradley and the External World
8.                  Rorty and External World
9.                  MacDowell and the External World
10.              Maritain and the Problem of Knowledge
11.              Epistemology, Justification and the Nature of Philosophy
12.              Conclusion, Revision and Examination

F    Bibliography/ Sources

1.                  Class lectures and notes
2.                  Bradley F. A: Writings of Logic
3.                  Collinson: 50 Major Philosophers
4.                  G.W.F. Hegel: Phenomenology of Spirit
5.                  Kant Immanuel: Critique of Pure Reason
6.                  Rorty Richard: Philosophy and the Mirror of Nature
7.                  Stumpf S.E: Element of Philosophy
8.                  Woolf Robert: About Philosophy

F    Term Paper submission: After Christmas break – Not more than 300 words.

v    14/10/2011

F    The Problem of Justification in Context.
We need to engage in a preliminary discussion in order to situate in context the problem of justification. This preliminary discussion on justification is to set the stage for addressing the problem of skepticism as found in the history of modern philosophy in terms of some representative thinkers like Kant and Hegel, Bradley and Rorty, McDowell and Maritain.
Before this, there is the need for us to say something about the problem of knowledge. Certitude and skepticism is another variation of the problem of knowledge. The problem of justification is a problem in Epistemology as regards the nature of knowledge and the central point in the definition of knowledge, what are the nature and condition of knowledge. What is the essence of knowledge? It is in the context of the defining the nature of knowledge that the problem of justification emerges. Since the issue is to define the nature of knowledge, there is a correlation between Epistemology and the problem of justification; with the understanding that knowledge is Justified True Belief, knowledge.
If knowledge is Justified True Belief, the task of epistemology could be concerned to provide a justification which implies providing a proof. To justify something is to provide reasons or grounds of which this reason could be accepted. In the case of knowledge, what is required is reason or proof. Epistemology is a discipline that provides grounds for accepting that there is possibility of knowledge.
This preliminary is that the problem of justification arises in the context of skepticism which demonstrates that we cannot know anything with certainty. It means that doubt cannot co-exist with knowledge. It means that in any attempt to justify knowledge, epistemology would resort to the search of certitude, that is, truth beyond doubt. From the foregoing, we can already see the influence of skepticism in the context of justification. Thus skepticism is what gives rise to the need to justify knowledge in the face of the challenge of skepticism. The problem of epistemology can therefore be construed as the problem of justification.
The concept of justification implicates the concept of epistemology and skepticism. There are constellations of concepts that arise in the concept of skepticism. Epistemology must provide the possibility of knowledge. If epistemology is able to provide such justification, it means that epistemology will be able to defend certainty in knowledge and refute skepticism but if otherwise, it means that skepticism will triumph. Epistemology tries to provide justification for knowledge and epistemology must be seen to fail in its effort to defend knowledge if it fails to contend the challenge of skepticism.
At this juncture, it is important to know that a certain understanding of knowledge is presupposed, namely, the understanding of knowledge as Justification. On this view, we can equate knowledge with justification and this equation is still very much under the influence of skepticism since in the skeptics’ denial, there is an implicit desire for the knowledge that knowledge cannot coexist with doubt. If we are not sure about our knowledge claim, this will be sufficient to invalidate such knowledge claim.
The epistemologist understands the argument of the skeptics if the possibility of knowledge must be sustained. This is the implicit standard for knowledge. Does that mean epistemology accepts the philosophical cogency of the attack of the skeptics on knowledge? Of course it does namely, that knowledge cannot coexist with doubt. This is the position of the skeptics. If we must justify knowledge, we must demonstrate that which we know with certainty. If we cannot know with certainty, we have no claim.
The skeptic’s attack on knowledge is unsustainable. This means that for both the skeptic and the epistemologist there is a common premise that agrees on which, on the one hand, the standard plays a deconstructive role on the position of the skeptic on knowledge. On this view, the stipulated standard cannot be realized. The conclusion is the negation of the possibility of knowledge. The epistemologist on the other hand, affirms that the standard can be realized. In view of this consideration, the major task of epistemology in its campaign against skepticism is to prove that knowledge cannot coexist with doubt. The standard plays a constructive role for the epistemologist since the argument is to defend the possibility of knowledge.
As we have seen, the standard that knowledge cannot coexist with doubt is shared by both the skeptic and the epistemologist. For the skeptics, the standard plays a deconstructive role in that for them, we cannot have certain and indubitable knowledge. For the epistemologist on the other hand, the standard plays a constructive role in that for the epistemologist, certain and indubitable knowledge is possible. The epistemologist accepts the standard and uses it to make a case for the possibility of epistemology. If epistemology can find a justification that measure up to this standard of knowledge, then, it can rejoice against the attack of skepticism.
Skepticism therefore sets the agenda for epistemology and this could be seen in a way that the project has been concerned particularly in the case of justification. We are familiar with the classical definition of knowledge as Justified True Belief. The goal of epistemology is to portray a different situation, that is, to suggest that it is possible to know something with certainty and it does that by not focusing on skepticism’s denial of the possibility of knowledge. What epistemology does in order to secure knowledge is to provide a definition for knowledge and in doing so it sees the possibility of knowledge against the position of the skeptics
Epistemology attacks this knowledge constructively while the skeptics attack it deconstructively. The preoccupation of epistemology is on what is knowledge and in doing that, epistemology analyses knowledge into its basic components. The skeptics say that knowledge is not possible. If knowledge is possible, what then is knowledge? The approach of the epistemologist to the issue is positive. Yes, knowledge is possible and as such they set out to define knowledge to meet the requirements as set by the skeptics.
The main agenda of the skeptics is to analyze knowledge as not possible. Traditionally, in attempt to provide a definition of knowledge, epistemology has engaged in the analysis of knowledge with the hope that a clear analysis of the content of knowledge would enable us to understand the true nature of knowledge. This has led to the three components of knowledge, namely; Justification, Truth, and Belief.
Belief is necessary for knowledge but that is not sufficient. Something more is needed, and that is Truth. This implies that for a belief to pass as knowledge, that belief must be true. In other words, it is not sufficient to believe something. Mere belief will not amount to knowledge. Yet as necessary as truth is, when we apply truth to what we believe, can we say that that is sufficient for knowledge? If not, then, it cannot be a case for knowledge. For something to qualify as knowledge, that thing must be true.
Furthermore, for a thing to be true there must be evidence (justification) to show that such is the case. This then is what has been regarded as the classical definition of knowledge namely, Justified True Belief. The most important aspect of this definition is justification (evidence). If we believe something and such is true, it is still possible to say that we do not have a knowledge claim. There must therefore be evidence to substantiate our knowledge claims. When we have these three components attached to our knowledge claim, then we can say that our knowledge is justified in that context. If we have belief and the belief is not true, it is not possible to regard such belief as a case of genuine knowledge. We can claim to have knowledge if and only if what we claim to know is supported with evidence or justification.
In approaching this matter, the epistemologist is accepting the importance of justification. It accepts this consideration but the question is whether the evidence is sufficient. If the evidence is not sufficient, can we talk of knowledge?  We have evidence but the evidence is not sufficient according to the skeptics. The fundamental question is whether the evidence we have is sufficient to sustain our knowledge claim. This was what Gettier discovered in his argument against the traditional definition of knowledge as justified true belief. In so far as the evidence is not sufficient, one is still vulnerable to the challenge of skepticism and the only way to deal with that is to discover enough evidence to substantiate our knowledge claims. Of course epistemology does take all these into account.
Since epistemology is to fight the problem of skepticism, the epistemologists can make concessions that not all evidence are sufficient. As such, setting for himself the task of meeting the requirements of knowledge and he does this by searching for justification for our knowledge claims. To overcome the challenge of skepticism, epistemology must provide a sufficient ground to substantiate what we claim to believe. So the burden of proof is on the epistemologist to show an adequate evidence for believing what we claim to be the case.
F    Representation and the External World
Our preliminary discussion has tried to cast light on the problem of justification. We have seen some of the problems of justification already in terms of the classical definition of knowledge as justified true belief. We shall now present the matter alternatively between representation and the external world. The correlation between belief, truth, and evidence (justification) can be seen in terms of the issues arising from the question of the relationship between representation and the external world. The issue remains the same except that it presents itself uniquely and there is basis for arguing for the possibility of knowledge.
Knowledge concerns the knower and the known; subject object relationship. Knowledge always involves the relationship that goes beyond the subjective domain to the objective domain. From the standpoint of the problem of justification, we have the basis of affirming the relationship between the external world and representation. There is a relationship between representation and the`` external world or the objective domain of reality.
Knowledge presupposes that objectivity and not subjectivity. Knowledge includes we guarantee a sustainable evidence that is subjective rather than objective. Clearly, what needs to be investigated is the nature between representation and the external world which is objective rather than subjective. The possibility of knowledge has been justified whether or not if we do not have the relationship between the representative and the external world.
It is easy to see the issue of the nature of the relationship between representation and the external world as to the problem of justification. The problem of justification between representative and the external world is a reformation of the classical definition of Justified True Belief. We transcend the domain of mere belief to the domain of subjectivity. The case is that what we believe is not only in the domain of the subjective belief but we need to add truth to it.
You cannot sustain that P is true unless you have a ground to back-up that P is true. What guarantees that is that we have sufficient claim which is the evidence. If we add justification to what we believe, then it is no more subjective thing but can be seen objectively. If you cannot move beyond the domain of mere belief, it means that skepticism is true. But if we move beyond mere belief, then skepticism is not true.
The problem of a reformulation of knowledge is that the challenge of skepticism remains the same and have caused comes the relationship between the subject and the object. It is a task of epistemologists to be able to show that the relationship between representation and the external world is not only subjective but objective as well. The focus is on the connectivity of representation and the external world. For the skeptic say that the connectivity cannot be objective but the epistemologists says the connectivity cannot be subjective but more than subjective. If this is so, then, skepticism is overturned. There is a correlation between the challenges of epistemology and that of the skeptics in relation to the problem of justification.
The task of epistemology is that representation is subjective but more importantly, is to say that representation is also objective. Two definitions of knowledge can be seen from the classical definition of knowledge as Justified True Belief; and the relationship between representation and external world which is to accentuate the problem of justification and the challenge of skepticism.
v    17/10/2011
We have tried to present the basic issues involved in the problem of justification that knowledge is possible. We presented this in two basic formulations: first, the classical definition with the analysis of knowledge as belief, truth and evidence (Justification). Second, the problem of the relation between representation and the external world. Having engaged in this clarification, the next point to consider is the implication of this scenario for the nature of epistemology as you know very well, that epistemology is not a new discipline. It is as old as philosophy itself.
Many ancient philosophers were preoccupied with the nature of knowledge. Thanks to Plato in analyzing knowledge into its basic component of Justified True Belief. We can remember that the sophists provoked Plato to discuss the problem of knowledge. The mode of its manifestation is not the same. Its mode of manifestation has witnessed different configuration and the new evidence is the declassification in the modern period. This however, is being propelled by the skeptics. Plato did not dwell on that justification as a sufficient consideration for knowledge. It is only at the start of the modern period that this point became definitive and this means that knowledge becomes justification and without justification, we cannot talk of knowledge. Meaning that without it we cannot accent the possibility of knowledge. And the need to insist by that point was motivated by the problem of skepticism.
It is in this context that epistemology becomes first philosophy. This is what defines the peculiarity or manifestation of epistemology in the modern period. Evidence is seen as the sufficient means for knowledge. What do we mean by epistemology as First Philosophy? Epistemology as First Philosophy implies that the problem of knowledge assumes precedence over the problem of reality or metaphysics. This is because before we cannot fail to address the problem of reality without addressing of knowledge. The problem of knowledge becomes a precondition for the problem of metaphysics
If the problem cannot be solves, there is no need to attempt to solve the problem of reality. What is the point of investigating the nature of reality? If this is to be done, we need to be sure that it is possible to know and if it is not possible to know, then, we cannot conduct anything on the nature of reality itself. This means that philosophy is in trouble.
If it is not doubtful whether or not we can actually know, such enterprise as epistemology is not worth the trouble. What we are trying therefore is to accentuate the importance of epistemology as First Philosophy. The idea of epistemology as First Philosophy is tailored by addressing the problem of skepticism.
The skepticism is not only attacking knowledge but also metaphysics. The skeptic is saying that we cannot truly know and that all our knowledge claims belong to the domain of belief and as such, belief cannot give us certain knowledge. Our claim to know is not objective therefore. If this is correct, the implication for all branches of philosophy is evident.
Epistemology is seen as the defender of knowledge. According to the skeptics, the epistemologists are……………way positive and that is why epistemology is called First Philosophy; showing to the skeptics that there is possibility to know otherwise if this is not possible then, philosophy is sufficient.
The problem of knowledge on the view of epistemology as First Philosophy, the most fundamental problem that require to be out is the problem of knowledge before any other thing because epistemology is said to be First Philosophy. It is important to see the image of epistemology because it is seen as savour of knowledge and by extension, of philosophy as well. Epistemology serves knowledge and also philosophy as well.
At the beginning of the modern period, the common assumption is that we have to address the problem of knowledge before addressing that of metaphysics. This then becomes a point of departure for addressing the problem of metaphysics. That was a heavy investment in the history of philosophy since what needed to be overcome is skepticism. The status of metaphysics and philosophy as such in presenting itself as First Philosophy epistemology does so in full consciousness as a threat to the whole of philosophy. And in addressing philosophical problems, epistemology takes into account the logic of the skeptics that knowledge cannot co-exist with doubt and as such, knowledge is equated with certitude.
Epistemology is aware of the logic but in other to upset the logic, the epistemologist will accept the demand for certainty. If the requirement for certainty could be obtained, then it will allow epistemology to argue for the possibility of knowledge. What does that have do with the status of philosophy. The epistemologists are saying that the requirement for certitude which according to the skeptics cannot be obtained, but which according to the epistemologists becomes a search for certitude in other to satisfy the requirement for knowledge. If the requirement is satisfied, then, the logic of skepticism is invariably nullified.
Epistemology is therefore preoccupied with the search for certainty but also in the broader context it is in search of the problem of justification. This whole understanding of epistemology as First Philosophy designed to address the problem of skepticism will be viewed with scrutiny and the definition of epistemology as Justified True Belief will be questioned as well as the idea of epistemology as First Philosophy.
Skepticism motivated the challenge of epistemology as First Philosophy. Without the challenge of skepticism it won’t have been necessary to know epistemology as First Philosophy. By addressing the problem of justification for the present purpose, it suffices to know whether it is a manifestation for the search for certitude.
v    Conclusion
By way of conclusion, there are three broad positions which include:
1.                  The position of the skeptics that it is not the case that we can find justification between representation and the external world. Knowledge does require absolute certitude. In actual fact, according to the skeptics, we cannot find total certainty.

2.                  The position of epistemology with skeptics is that epistemology share the idea of absolute certitude. The epistemologist argues for the possibility of knowledge that we can provide successful justification for the relationship between representation and the external world. The modern era also attempted to grapple with the challenge of skepticism.

3.                  The final position is association with contemporary philosophy whether we really need epistemic justification in the search for knowledge. On the one hand, the epistemologists say that a successful justification of knowledge is possible but the protagonists say it is not possible. To gain knowledge, we need to bring to the fore the relationship between representation and the external world.
Epistemology purportedly provides an understanding of knowledge in a positive way as Justified True Belief. The claim of the epistemologist is to invoke that evidence becomes a mode for acquiring knowledge.
v    21/10/2011

F    The Cartesian Initiative and its consummation in Hume.

·                     Introduction.
Having completed our preliminary discussion on the problem of justification, we should see immediately the entire discussion for the rest of what will follow in the course especially the Cartesian initiative and its consummation in Hume. For our discussion, epistemology is defined in terms of the quest for justification and the concrete result is that in the domain of epistemology, there are several theories of justification with each theory claiming to defend the possibility of knowledge against the attack of skepticism. Such theory began with Descartes and includes such thinkers as Locke, Berkeley and Hume.
Our purpose is to examine these theories especially the inner logic that drives the unfolding of the overall argument of epistemology on behalf of knowledge from Descartes to Hume. In considering these theories, two issues needs to be kept in mind:
First, it is important to know that is it one thing to claim we have justification for the possibility of knowledge and the other, to claim that theory is successful. Of course both are open to inspection, that is, whether it is an authentic claim to availability of justification we can find out if this is the case or not. We can find out if the possibility of justification is actually successful with regards the possibility of knowledge. If the project of epistemology cannot be said to be successful, this means that the challenge of skepticism remains successful. The struggle between skepticism and epistemology is therefore like a ding-don affairs in the modern context.

Most epistemologists will claim success for this theory of justification and it is good to know whether they are successful actually and if they are not, then we have to look for a better theory of justification.




F    Cartesian Initiative.
The term Cartesian is an adjective of Descartes just as Kantian is an adjective of Kant. Cartesian is something attributed to Descartes. Since Descartes is regarded as father of modern philosophy and as such the father of modern epistemology. Strictly speaking, modern philosophy is epistemology. Epistemology as First Philosophy involves an accentuation of the problems of knowledge such that the problem of knowledge is said to be a precondition for philosophy. Descartes is at the very center of the epistemological term that is why it is proper to regard him as the father of modern epistemology.
Having said that, I do not think that there should be any equivocation regarding the relationship between Descartes and the ideal of epistemology as First Philosophy. If Descartes is the father of modern epistemology, and if he is successful to the ideal of epistemology as First Philosophy, it means that much of what we said under the topic: the topic of epistemology in its correlation with the problem of justification in response to the challenge of skepticism should be applicable to Descartes since he ascribe the ideal of epistemology as First Philosophy.
For that reason, what should be paramount is to try immediately to establish the nature of the Cartesian initiative. In trying to clarify the nature of Cartesian initiative, we do not need to repeat that it is in respect to the challenge of skepticism and Descartes is foremost in providing such response to the challenge of skepticism and this response id paradigmatic to the challenge of skepticism that is why it is called Cartesian initiative before reaching its consummation in Hume.
In clarifying the nature of Cartesian initiative, the whole idea is to indicate that subsequent attempts is derived from this initiative noted for the problem of knowledge and this will enable us to see how ideas get inspiration from that of Descartes.
The first point regarding the nature of Descartes’ initiative is his recognition that knowledge cannot coexist with doubt. Put differently, if our knowledge is infested with any iota of doubt, it means that the authenticity of that knowledge is undermined. It means that the phenomenon of doubt plays a pivotal role. Descartes will begin by allowing that the position of the skeptic is right. Descartes will agree with the skeptics in other to overturn the position of the skeptics. This is what he did in his universal methodic doubt.
In the first meditation, he attempted to doubt everything in an attempt to finding something indubitable – that is, the belief that there is something beyond doubt. He agreed with the skeptics that knowledge cannot coexist with doubt in other to attain certain and indubitable knowledge. The idea is that if indeed there is one and if only that thing is resistant to doubt, Descartes believed that that implies that a standard of knowledge as absolute certitude can be fulfilled. In other to do this, he was forced to conduct an experiment of doubting everything he comes across that is doubtable.
There are several moments in Descartes’ methodic doubt. Descartes eventually came to a point that something cannot be doubted and that is the truth of his own existence. The discovery of the cogito marks an important moment in the challenge of skepticism. It brings about the application of the universal methodic doubt. The truth of truth cogito is the foundation upon which Descartes is to build the entire edifice of knowledge.
We have moved from Descartes’ response to the challenge of skepticism via the nature of the universal methodic doubt to the notion of the cogito upon which we can rest the entire edifice of knowledge.
Knowledge cannot coexist with doubt and through the application of the universal methodic doubt, we affirm the truth of the cogito and if that is the case, it means that the skeptic is not correct in their claim that certainty is impossible regarding our knowledge claims.

BR. PASCHAL’S NOTE
We should begin by looking at Descartes response to the challenge of skepticism as a prelude to how his initiative later consummates in Hume. In order to do this, let us quickly consider Descartes relationship to the ideal of epistemology as First Philosophy. In view of our previous discussion, if Descartes is an epistemologist, we should expect that he should subscribe to all the correlations we established earlier, that is, the correlation between epistemology and skepticism, between justification and skepticism and epistemology on the one hand and the representation and external world on the other hand, Descartes indeed is regarded as the Father of Modern Epistemology, meaning in effect like many epistemologists still do, Descartes recognizes the threat that skepticism constitutes to knowledge. Consequently, if knowledge were to be shown to be possible in response to the position of the skeptics, the test of epistemology becomes inevitable. How does Descartes go about dealing with the challenge of skepticism?
With the assumption that we are not dealing with Descartes for the first time, we need to presuppose certain grounds before hands. The point we need to keep in mind as a point of departure is that Descartes recognizes that skepticism is a philosophical position as we pointed out earlier. If it is a philosophical position, it means that the position is predicated on a premise and then the premise leads to a certain conclusion, namely the negation of the possibility of knowledge. So in his challenge to the response of skepticism, Descartes will take into account the logic that permeates the argument of the skeptic. He wants to see whether the conclusion that harnesses to the premise is correct.
 Of course at the offset the heart of the premise informing the skeptic argument against the possibility of knowledge is the phenomenon of doubt. The assumption that doubt cannot coexist with knowledge, which means that the condition of knowledge is absolute certitude. Descartes appreciates this point of the skeptic in saying that doubt cannot coexist with knowledge, that certitude is the condition for knowledge, yet the question remains whether doubt should necessarily warrant the negation of knowledge. If doubt necessarily implies the negation of knowledge, then, it means that the skeptic will be right but if it were possible to pass through the root of doubt to knowledge by way of overcoming doubt with doubt, then, it will imply that perhaps the skeptics have not properly articulated the true nature of the relationship between doubt and knowledge. That is what Descartes will try to do. He will try to show that even though doubt cannot coexist with knowledge, as the skeptic says, it is still possible to arrive at certain knowledge
Take note that in saying that doubt cannot coexist with knowledge and thereby legislating for an implicit standard of knowledge, the skeptic is saying that if any belief is infested with any iota of doubt, then we cannot sustain any knowledge claim with respect to the belief in question. Put differently, the skeptic argues that it is impossible to be totally free from doubt with respect to any belief we entertain. Then if that is the case, it means that it is not possible to entertain certain knowledge in any circumstance, since in any case our beliefs are always infested with some degree of doubt and if doubt cannot coexist with knowledge and our beliefs suffers for certain doubt, then it means that we cannot guarantee the possibility of knowledge in any circumstance. But Descartes wants to prove precisely the opposite because the skeptic is saying that we can know nothing with certainty.
It means we cannot guarantee the possibility of knowledge in any circumstance whatsoever. However, Descartes wants to prove precisely the opposite because the skeptic is saying we can know nothing with certainty deriving from the nature of doubt in his relationship with knowledge. Knowledge is synonymous with certitude this is the implicit standard the skeptic legislates. The skeptic argues that this requirement could not be meet and to that extent, it means that knowledge is not possible.
If it were possible to satisfy the condition, it means that the position of the skeptics would be overturned. If you could show that, there is one thing that could be known with certainty that will be sufficient to disprove the position of the skeptic. Therefore, it means that the phenomenon of doubt plays a pivotal role in the position of the skeptics. If we are to understand the philosophical nature of the argument of the skeptics, we need to understand the status of the phenomenon of doubt in that argument.
Descartes appears to be aware of this. He knows that the argument of the skeptics is a philosophical argument. He knows that the argument is predicated on the phenomenon of doubt and the role it plays in the skeptic strategy. He knew that there is a correlation between doubt and skepticism in the argument of the skeptic. He knew that if epistemology is to take on the challenge of skepticism, epistemology will need to take into account the logic of skepticism given that it is a philosophical argument. Epistemology would not respond adequately unless the response is philosophical and for the response to be philosophical and adequate to the matter, it means that response has to follow the logic of the argument.
This means that for epistemology to defeat skepticism, it has to study skepticism thoroughly with respect to the structure of its argument and when epistemology thoroughly understands the structure of the argument, and then it can counterattack and possibly overturn that position in favour of an affirmative position of the possibility of knowledge. To do this implies that one is ready to confront the skepticism on its very ground, meaning that the battle would be fought on the issue of the nature of doubt ad how to correctly perceive its relationship with knowledge. Descartes will confront skepticism on its own ground and for this reason; he will begin by allowing the possibility that the skeptic is right in saying that doubt cannot coexist with knowledge.
In other words, the logic of the standard of knowledge is certitude but were he will disagree whether of not we can find anything that is certain and how we can find it, if such a thing exists. Of course, Descartes believed that there is something that is certain. However, it is one thing to believe that there is something cetin and another to prove it. The skeptic requires a proof and not just a belief or convictions. The skeptic requires a demonstration of the validity of one’s conviction that something can be known with certainty. A person can believe that something can be known with certainty but without demonstrating it. In this respect, the person has not actually responded philosophically to the argument of the skeptics. This implies that Descartes will begin by agreeing with the skeptics that we can know nothing without certainty.
But while provisionally going along with the skeptic that we cannot accept any knowledge claim as authentic if it is infected with an iota of doubt, Descartes would want to show that we can know something with certainty. In other words, he would want to overturn the position of the skeptic by precisely going along with him by doubting (provisionally), anything that is doubtable.
That is a concession to skepticism but that is a very tricky concession because by granting that very concession, he wants to use that very process to overturn the position of the skeptics y showing that in the process of doubting all that is doubtable, one discovers that there is something that is indubitable. This is largely what he does under the heading of Universal Methodic Doubt – that is Descartes’ preoccupation in the First Meditation.
Here he attempts to doubt everything that is doubtable and his overall motivation is to find something that is indubitable. It is as though Descartes believes fundamentally that there is something that is beyond doubt. However, the fact that he agreed to doubt everything that is doubtable does not make him a skeptic. If he is a skeptic in any sense, then we have here a case of Methodological Skepticism and indeed his universal Methodic Doubt is a form of Methodological Skepticism, a skepticism that seeks to affirm the possibility of knowledge by exploring the root of doubt. This method is therefore a strategy used to discover knowledge and to disprove the position of the skeptics. It means the alliance with the skeptic is only provisional and not ultimate.
As a strategic measure then, Descartes would provisionally agree with the skeptic in doubting everything that warrants the least doubt as means of attaining that which is indubitable. The idea is that if indeed there is one thing that proves resistant to doubt, then, it means that the position of the skeptics cannot be sustained.  Descartes therefore believes that that implicit standard of knowledge as absolute certainty can be satisfied. But in order to show that that condition can be satisfied, Descartes is forced to conduct a thought-experiment that takes him through a process of doubting everything. This process eventually uncovered that which is indubitable. In other words, one uses doubt to arrive at that, which is certain. That is the motivation of Descartes’ Universal Methodic Doubt.
We do not need to dwell too much on the various ramifications of Descartes’ methodic doubt but one thing is clear. There are several moments in Descartes’ application of the methodic doubt. All his beliefs were subjected to doubt. He divided his beliefs into various categories:
1.                  Beliefs deriving from the sense, this is divided into two categories.

(a)               Belief in objects that are distance from you but are nonetheless accessible to observation. Example: the auditorium from this point is a distant object; the secretariat is even a more distanced object from this point but you are not a distant object because you are very close but the cassette even close than you and my cassock is very closer to me than the table but they are all examples that are close to you.

Therefore, the object can be distant but nonetheless accessible to observation. It could also be close. The one that is easier to doubt is the distant object while the closer objects are less doubtable but they are nonetheless doubtable. This is what Descartes would try to show in addressing the second category of the object of doubt.
Correlating with those two categories of beliefs deriving from the sense is the argument from sense deception. This applies to distant objects like a sunny-day you are driving on the street and think that there is water on the road but as you get closer, you discover that there is no water, that it I a mirage, an appearance but not reality. That is argument from sense deception to prove that belief s deriving from the senses is doubtable. They can be doubted but he is looking for one thing that cannot be doubted in other to overturn the position of the skeptics. The methodic search therefore for that one thing that could not be doubted and the first moment of his methodic doubt is to see whether the beliefs deriving from the senses can be doubted or not. Nevertheless, the one that is less doubtable is nonetheless doubtable.
The third one is the mathematical and geometrical beliefs; that is, beliefs relating to mathematical and geometrical realities for example 2+2= 4. The angles of the right angle add up to 80. The question is, can that be doubted? For Descartes, it can be doubted. In applying the methodic doubt, he concluded to doubt because it is very possible that an evil genius is manipulating you and that correlates with an evil genius hypothesis. Those are the several moments in Descartes’ application of the Methodic Doubt and in all of this, he is genuinely searching for something that could not be doubted, something that can resist doubt and serve as a foil to the skeptics’ position.
Descartes continued to apply the methodic doubt even after submitting that geometrical and mathematical beliefs are not immune from doubt. And to that extent cannot yield certain knowledge as demanded by the skeptic, but he continued searching for the one thing that that will prove resistant to doubt. Eventually he came to the point when he discovered that there is something that could not be doubted namely, the truth of his own existence. That is, that in the very process of trying to doubt whether he exists or not proved that he did exists. So in doubting that he existed, he came to the affirmation that he could not doubt that he existed. This is what is famously regarded as the discovery of the Cogito that is the sudden realization that the very process of doubting can uncover something that is indubitable. This was a fundamental moment in Descartes’ response to the challenge of skepticism.
It is an important moment because at this point he has proved to the skeptic that he understood the logic of his argument, thus that they should accept the outcome of his methodic doubt. This means that somebody can begin with doubt and arrive at knowledge but the skeptics were saying that with doubt, that there is no knowledge. This implies that the relationship between doubt and knowledge is something complex. It is not a single relationship such that you will say that whenever there is doubt, that you will negate the possibility of knowledge. However, Descartes is showing that in certain situations, that doubt actually leads you to discover the possibility of knowledge.
The discovery of the Cogito is therefore an important moment in Descartes’ attempt to address the challenge of skepticism because it bought to an abrupt halt the application of universal methodic doubt. Descartes is searching just for a single proof that would counteract the claim of the skeptics that we cannot know anything with certainty. Once this proof is found, then, the position of the skeptic is thereby nullified. What Descartes is saying in effect is: now let us agree that we can doubt everything. I want to apply that to all the beliefs I have ever entertained and all he beliefs I can possibly entertain. It is a thought experiment. If I go through that process of application and I do not find any of the beliefs that can resist doubt then, it means that you are correct. In the course of applying this methodic doubt however, if he discovers just one thing that roves resistant to doubt, then he need not continue to apply it. It means that he does not just doubt for the sake of doubting but in other to find something that can be known without doubt and once he has found it, then the universal methodic doubt becomes needless.
Therefore, the discovery of the cogito marks an important moment in Descartes’ attempt to respond to the challenge of skepticism because it effectively brought to a halt the application of the universal methodic doubt. It means that in an attempt to apply that provision to the truth of the self, the attempt to apply the methodic doubt to the truth of the self proves the self-resistant to doubt and for that reason Descartes comes to the resolution to adopt it as the foundation upon which to rebuild the entire edifice of knowledge.
·                     The Cartesian Initiative and its consummation in Hume
·                     The Methodic Doubt and Descartes’ response to the challenge of skepticism
·                     The discovery of the Cogito and the task of reconstruction of the edifice of knowledge

We have been considering an aspect of that topic that deals with Descartes’ response to the challenge of skepticism. That is one way to deal with the issue of the nature of the Cartesian initiative. To this end, we been exploring Descartes’’ methodic doubt. We have the various moments of his application of the methodic doubt and indeed, it has emerged that the end result of the application of the methodic doubt is the emergence of the cogito or if you like the discovery of the cogito as one truth that can be known without doubt or one belief that is indubitable. The discovery of the truth of the cogito as indubitable as we noted earlier brought to an end the application of the universal methodic doubt. Thus it signaled a provisional victory over skepticism since the argument of the skeptic is that knowledge cannot coexist with doubt.
If knowledge cannot coexist with doubt and if we cannot know anything with certainty it means we cannot justify the possibility of knowledge. But having now discovered through the application of the methodic doubt that there is one truth that can be known with certainty, namely, the truth of the self, it means that the position of skepticism becomes problematic since at least there is now one thing that can be known with certainty even if we do not know any other thing with certainty because they are dubitable. The fact that we can know the truth of the self indubitably implies that the skeptic cannot hold his ground against epistemology. That is the first point with regard to the significance of the discovery of the cogito.
There is much more than this at stake within the environment of the discovery of the cogito. The point is that with the discovery of the cogito there is still the need to reconstruct the entire edifice of knowledge. We cannot take for granted this provisionary victory epistemology secures over skepticism. This provisional victory may not be sufficient or secure so long as Descartes is unable to move beyond the truth of the cogito to other possible truths. There is need to connect the world of the cogito to the world beyond the cogito. So unless the world of the cogito can be connected with the world beyond the cogito it remains to be seen whether the provisional victory that this discovery brings about will be enough to keep skepticism perpetually at bay.
So Descartes is fully aware of the shaky nature of this provisional victory and he needs to do something to ensure that the victory becomes a total victory such that skepticism is perpetually defeated. Otherwise, the purported victory may soon dissolve into its opposite. He has to ensure that it is not just the world of the cogito that can be known with certainty but that the world beyond the cogito can also be known with certainty in one form or the other. Descartes will pay close attention to the truth of the cogito in attempt to reconstruct the entire edifice of knowledge.
You will remember that in the process of applying the methodic doubt, Descartes resolved to doubt everything that could not be known with certainty, the truths and beliefs deriving from the senses and the truth deriving from reason. So in attempt to reconstruct the entire edifice of knowledge, Descartes would have to rehabilitate these beliefs that are provisionally discarded as doubtable beliefs because they could not be known with certainty. However, how precisely he is going to pursue this agenda of rehabilitation is a different matter altogether. His pursuit of this project of rehabilitation of his previous beliefs is not unconnected with the credentials of the cogito. So far the cogito if you like, is the saviour of epistemology. It has given epistemology some hope in its battle against skepticism, that there is at least one thing that can be known with certainty. So in attempt to reconstruct the entire edifice of knowledge, Descartes will pay at close attention to the structure of the truth of the cogito in n attempt to address the issue of the foundation of knowledge and secondly to address the issue of the edifice of knowledge.
Note that every building has a foundation and a superstructure. The case of knowledge is no different and Descartes is approaching knowledge in terms of the architectural model, meaning that knowledge has a foundation and a superstructure this is why Descartes is regarded as a fundationalist. 
Relating al this to his discovery f the cogito, the first requirement is to search for a foundation that is sure upon which the entire edifice of knowledge could be erected. The quest for such foundation is an integral part of his response to the challenge of skepticism and the emergence of an indubitable truth is an important moment in that endeavourer of responding to that challenge of skepticism. Having discovered the cogito, Descartes made it the foundation on which to reconstruct the entire edifice of knowledge for the simple reason that the cogito is indubitable.
What recommends the cogito is the fact that it is perceived clearly and distinctly. This quality of distinctness and clarity of perception becomes the criterion of truth for Descartes. In other words, anything that approximates the cogito in distinctness and clarity by which it is perceived, such a thing or such a belief must be regarded as truth. The definition of truth becomes therefore that which is perceived clearly and distinctly. The cogito then not only functions as a foundation but also functions as a criterion for truth. With this development, it becomes easier for Descartes to pursue his project of reconstructing the entire edifice of knowledge because it means that he can now reexamine his former beliefs in terms of the model of the truth of the cogito and then try to rehabilitate them as much as possible.
The major challenge here however, has to do with the connectivity between the foundation and the superstructure. The foundation is the cogito, the superstructure refers to the other beliefs that may not necessarily be indubitable but nonetheless can be accepted as true because of the affiliation with the foundation. So if the foundation is such, it will carry the rest. If the foundation is certain, then, it means the rest of the building will share in the fruit of the certainty of the foundation. So that is what it means to say that Descartes is a foundationalist because it means that even though the faith of the superstructure may not be affirmed directly but it can nonetheless be affirmed indirectly so far as we recognize that we can make an inference from the foundation to the superstructure. And if the foundation is ok, it means that directly the superstructure is also ok. This is the logic of foundationalism which is the rehabilitation and also the project of reconstruction. So the project of reconstruction itself is dependent on the discovery of the cogito.
So for the victory secured by the discovery of the cogito to be sure, there has to be a way to reconstruct the entire edifice of knowledge such that the edifice of knowledge is guaranteed by the foundation of knowledge. But there is a problem here. So for Descartes, this logic of foundationalism is excellent, that the foundation should guarantee the superstructure given that the foundation is indubitable we can also say that inference that the superstructure is also indubitable. So if he can do that, then it means that the provisional victory is no longer provisional victory, rather it is a victory that is perpetually secure so there is no need to be afraid of skepticism again.
But the question is: can he do that? Can he claim to have done that? The problem here has to do with the nature of the cogito as a subjective truth. So the cogito is an indubitable truth because it is perceive clearly and distinctly. So it means you cannot doubt whether the self exist or not. But it is one thing to say the knowledge is indubitable, but is the knowledge also objective? For the knowledge to be objective, it means that the reference must not be just to the cogito but to something that is objectively…… So you can ask whether the certitude with which the cogito is known also implies that the cogito is known objectively. So unless we can say that the knowledge is not just indubitable but it is also objective. Then there is a problem with regards moving from the foundation to the superstructure if you do not have the justification for the transition from the foundation to the superstructure.
So if the foundation is subjective to put it differently, it means that connectively between the foundation and the superstructure is in trouble if the foundation is merely subjective. But if the foundation is more than subjective then it can serve as a bridge that leads you without any problem. But by the very nature of the cogito, it is a subjective truth. So if is a subjective truth and not also objective, then there is a big problem because it means that the cogito can be easily trapped in his own world. The cogito is certain but beyond the certitude with which the cogito is known, you could not say anything truly exist beyond the world of the cogito. So you are confronted with what you might call a solipsistic cu de sac (dead end). It means that the cogito cannot connect to any other thing except the self. But for the cogito to connect to any other thing than itself it means that the cogito has to be objective.
It is the objectivity that opens it to other things beyond its own world. So unless that can be done, it means this project of rehabilitation is in trouble and unless that project succeeds, it means that that provisional victory collapses. Put differently, unless he can connect the cogito to something other than the cogito objectively, there is a problem. To connect it subjectively raises no problem because if you believe in indubitablility, you cannot be wrong. So Descartes needs to justify the connectivity between the cogito and the superstructure if the cogito is to guarantee the superstructure. So Descartes seems to have recognized the subjective nature of the cogito as far as the whole project of rehabilitating the rest of knowledge is concerned and for that reason he know he could not vouch for the existence of any other thing apart from the self.
Unless he could demonstrate that the cogito is more than subjective truth, so he knew that he could not say that any other thing exists. That is why it is the case of solipsistic cu de sac. So he could affirm the existence of the self but the self is not alone in the world. So what is the connection between the self and the world? The self is certain but the connectivity of the self to the world. So the moment you mention the self, you mention the world. So what is the connection between the self and the world? The self is certain but the connectivity of the self to the world, you could say is not certain.




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