This infers to the belief that he may be being tricked by something wicked. If something seems so ordinary such a square with four sides how could we know it was true. For example in the matrix everything that is seen seems to be so ordinary but leads to the understanding that everything is unreal. In Inception you see Cobb leaving within this “matrix” within the false reality he creates. Everything is ordinary and makes perfect sense that it is a replica to the real world. This reality mimics the real world and will manifests real people, feelings, and places. It would be almost uncertain to think that it was not of the real thing. Cobb becomes tormented by falling in between the small crack within reality and unreality. Descartes ends this mediation by saying “Perhaps nothing is certain” (Descartes 347) tying in to the exact feelings of Cobb with his overpowering uncertainty.
In conclusion, For Cobb’s he has chosen the world that has deceived him but knows that his mind and body exist and that is all that matters. For Descartes does not know that truth but knows that knowledge exists because he does exist. Descartes rationalism debate proves that all knowledge is rational. Cobb would have been able to know that he was in the fictitious world if he would have used his reason. This is because his senses are which that had been deceived. Both Descartes and Cobb’s come to the statement that the only thing that is certain and really matters is that “I am, I exist” (Descartes