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Descartes admired science and mathematics’ abilities to discover new ideas and truths that everyone in the community could agree on, unlike philosophy’s highly disputive nature. Seeing this, Descartes set out to develop a method similar to math and science’s so philosophy could come to a consensus on answers and be more respectable. To do this, he created the process of systematic doubt: Descartes classed his beliefs into two categories, senses and rational intuition. He cast doubt heavily onto those two classes with two arguments: the dream argument and the deceptive demon argument. The dream argument dealt with the senses and if they were trustworthy enough to serve as an axiom. Descartes argued that he had had incredibly vivid dreams before,
so realistic that had seemed to be real and authentic while he was in them, so it is at the very least possible that this current reality could all be a dream as well, and he would never realize it. This cast doubt on his senses, showing that they were not infallible. The deceptive demon argument cast doubt on rational intuition. Descartes argued that it was possible that he was being deceived by an evil demon that could be altering his perception of nearly everything, including this usually seen as unshakeable, like math. While seemingly outrageous, there is no way to disprove this conclusively, so Descartes argued that this illustrated that rational intuition could not serve as an axiom either. However, through his use of the deceptive demon argument, Descartes managed to find one truly undoubtable thing, something that not even a deceptive demon could manipulate. In order to be deceived, Descartes reasoned, he would have to be thinking, and in order to be thinking, he would have to exist. This became his axiom: he exists, at the very least, as a thinking thing.
In “Bad Dreams, Evil Demons, and the Experience Machine: Philosophy and the Matrix”, Christopher Grau explains Rene Descartes argument in Meditation. What one may interpret as reality may not be more than a figment of one’s imagination. One argument that Grau points out in Descartes essay is how one knows that what one think is an everyday experience awake is not all a part of a hallucination. He uses the example of dreams to draw a conclusion about is claim based on experiences one would experience with dreaming. He asserts that there are times when one wake up from a dream that seems to be “vivid and realistic” however soon finds that it was not. The experience of reality in the dream was all a part of the mind. If dreams seem to be reality and one would not have any concept that one is dreaming how does one know that one is not dreaming now? Descartes point is that one cannot justify reality in the sense that one could be dreaming right at this moment and not know therefore one cannot trust the brain as an indicator of what is reality.
Baird and Kaufmann, the editors of our text, explain in their outline of Descartes' epistemology that the method by which the thinker carried out his philosophical work involved first discovering and being sure of a certainty, and then, from that certainty, reasoning what else it meant one could be sure of. He would admit nothing without being absolutely satisfied on his own (i.e., without being told so by others) that it was incontrovertible truth. This system was unique, according to the editors, in part because Descartes was not afraid to face doubt. Despite the fact that it was precisely doubt of which he was endeavoring to rid himself, he nonetheless allowed it the full reign it deserved and demanded over his intellectual labors. "Although uncertainty and doubt were the enemies," say Baird and Kaufmann (p.16), "Descartes hit upon the idea of using doubt as a tool or as a weapon. . . . He would use doubt as an acid to pour over every 'truth' to see if there was anything that could not be dissolved . . . ." This test, they explain, resulted for Descartes in the conclusion that, if he doubted everything in the world there was to doubt, it was still then certain that he was doubting; further, that in order to doubt, he had to exist. His own existence, therefore, was the first truth he could admit to with certainty, and it became the basis for the remainder of his epistemology.
In the first meditation, Descartes makes a conscious decision to search for “in each of them [his opinions] at least some reason for doubt”(12). Descartes rejects anything and everything that can be doubted and quests for something that is undeniably certain. The foundation of his doubt is that his opinions are largely established by his senses, yet “from time to time I [Descartes] have found that the senses deceive, and it is prudent never to trust completely those who have deceived us even once”(12). First, Descartes establishes that error is possible, employing the example of the straight stick that appears bent when partially submerged in water, as mentioned in the Sixth Replies (64-65). Secondly, he proves that at any given time he could be deceived, such is the case with realistic dreams. Further, Descartes is able to doubt absolutely everything since it cannot be ruled out that “some malicious demon … has employed all his energies in order to deceive me” (15). The malicious demon not only causes Descartes to doubt God, but also sends him “unexpectedly into a deep whirlpool which tumbles me around so that I can neither stand on the bottom or swim on the top”(16). Descartes has reached the point where he must begin to rebuild by searching for certainty.
In his work, Meditations on First Philosophy, Descartes narrates the search for certainty in order to recreate all knowledge. He begins with “radical doubt.” He asks a simple question “Is there any one thing of which we can be absolutely certain?” that provides the main question of his analysis. Proceeding forward, he states that the ground of his foundation is the self – evident knowledge of the “thinking thing,” which he himself is. Moving up the tower of certainty, he focuses on those ideas that can be supported by his original foundation. In such a way, Descartes’s goal is to establish all of human knowledge of firm foundations. Thus, Descartes gains this knowledge from the natural light by using it to reference his main claims, specifically
One of Rene Descartes’s most famous arguments, from his not only from his first meditation but all of the meditations, is his Dream Argument. Descartes believes that there is no way to be able to distinguish being in awake from being in a state of dreaming. In fact you could actually be in a dream right now. Rene Descartes’s theory that one is unable distinguish being awake from dreaming, as interesting as it is, can be at times a little farfetched, along with a few contradictions to himself, Descartes’s dream argument does not entitle himself to any sort of claim.
As Blackburn says, dreams are not as coherent as everyday life, they are shakier. Similar to this, Descartes says that dreams are like a painting. Objects could look like they are real; made in the fashion of those in the waking world, so therefore they have to be real giving a basis for scientific observations. These corporeal objects give rise to concentrations of science such as astronomy, medicine, physics, that use the observations that could seem doubtful if we are to take the dreaming argument into consideration without allowing for the fact that dreams must be based on waking life, and others, such as mathematics and geometry, are still unquestionable no matter if you try to base the dream off of reality. As Descartes says, “where I am awake or asleep, two and three added together are five.” Taking all of this into consideration, whether or not one is dreaming some science still remains, meaning observations are still viable in scientific knowledge. So my answer that you may use observations with care and thorough study still holds true, because even in a dream state there is still rational mathematics and science based off of reality. Along with these facts, many dream states can be recognizable through their slight disillusionment from everyday life, leading to one to realize they are asleep (lucid dreaming), which is not
It is easy for us to believe that what we experience with our senses is true, including in our dreams, but according to Descartes, we should look beyond our senses and use reasoning to determine what is certain. Descartes’ question, “For how do we now that the thoughts that arise in us while we are dreaming are more false than others, since they are often no less vivid and explicit?” (34), is asked so that we will acknowledge that our senses can easily mislead us. This should then cause us to use reasoning to differentiate between truth and illusion, and both authors agree that reasoning should be the guide to true knowledge. Though he believes in the attainability of certain knowledge through using reasoning, Descartes argues that there are only a few things about which we can be certain. Descartes’s philosophy “Cogito, Ergo Sum,” which means I think, therefore I am proves this. He believes that because our mind acknowledges that we can think and have doubts, we can be sure of our existence; if we stopped th...
Second, Descartes raised a more systematic method for doubting the legitimacy of all sensory perception. Since my most vivid dreams are internally indistinguishible from waking experience, he argued, it is possible that everything I now "perceive" to be part of the physical world outside me is in fact nothing more than a fanciful fabrication of my own imagination. On this supposition, it is possible to doubt that any physical thing really exists, that there is an external world at all. (Med. I)
Montaigne and Descartes both made use of a philosophical method that focused on the use of doubt to make discoveries about themselves and the world around them. However, they doubted different things. Descartes doubted all his previous knowledge from his senses, while Montaigne doubted that there were any absolute certainties in knowledge. Although they both began their philosophical processes by doubting, Montaigne doubting a constant static self, and Descartes doubted that anything existed at all, Descartes was able to move past that doubt to find one indubitably certainty, “I think, therefore I am”.
Descartes’ first two Meditations are arguably the most widely known philosophical works. Because of this, one can make the error of assuming that Descartes’ method of doubt is self-evident and that its philosophical implications are relatively minor. However, to assume this would be a grave mistake. In this paper, I hope to spread light on exactly what Descartes’ method of doubt is, and how, though it furnishes challenges for the acceptance of the reality of the external world, it nonetheless does not lead to external world skepticism.
The Dream argument was started by Rene Descartes, where he proposes the method of doubt, which permits him to consistently question the
With Descartes’ ideology of the senses and how they allow for deception of the individual, how are we supposed to be able to differentiate between when we are in a dream or when we are actually in reality? When we are in a dream as well as in reality, the senses seem real and we believe that what we experience is true; however, according to Descartes, the only way to determine whether or not an individual is experiencing a dream is through the use of their thought processing. Within reality, there are certain aspects that allow one to realize that they are presently living in reality. These two main aspects are routine and patterns that are performed on the daily basis such as, going to work, eating breakfast, or even brushing your
This lead to Descartes saying that he cannot use his sensory perception to interpret his belief because he is not able to tell if the senses are dreams or
In Meditations, Descartes brings doubt to everything he believes because it is human nature to believe that which is false. He states that most of what he believes comes from the senses and that a lot of times those senses can be deceived. His conclusion of doubting everything is based on his example of a basket of apples. It goes as follows; you have a basket of apples but you fear that some apples have gone bad and you don't want them to rot the others, so you throw all the apples out of the basket. Now that the basket is empty you examine each apple carefully and return the good apples to the basket. This is what he does with his beliefs, he follows and keeps only those beliefs of which he is sure of. Our beliefs as a whole must be discarded and then each individual belief must be looked at carefully before we can accept it. We must only accept those beliefs we feel are good.
Descartes is clearing away all knowledge that can be called into doubt. By doing this he hopes to create something real and lasting in the sciences, a foundation to build on. This indisputable fact will become the starting point or origin of all other true knowledge he can build upon it. He starts the first argument by attacking the very beginning of knowledge, human senses. Descartes states, "Surely whatever I had admitte...