Descartes’s famous Cogito Ergo Sum (I think, therefore I am) faces a dilemma. The dilemma he faces is that his premise begs the question. Instead of building up to a conclusion that would prove his existence, he states “I think” to already assume he exists. Then he carries on saying “Therefore I am” to ultimately conclude he exists. Hence, his conclusion does not follow upon his premise. Another dilemma the Cogito faces is that, even if Descartes had not used the first person notation to prove he is, all he had to say was thought is taking place. The statement would have been “There is thought, therefore I am”. However, this is also disputable because the premise involves invalid reasoning, which leads to an invalid conclusion. Nevertheless,
