My proof against Descartes statement “Cogito Ergo Sum” more clearly and simply explained.
Firstly: There is no such thing as the present, the present is always becoming the past and our thoughts, always becoming remembered thoughts.
Secondly: Every thought that we remember having may be a false memory implanted in our brain.
Thirdly: The only evidence that we have that this is not the case, unreliable as it may be, is the evidence of our senses. (Physical evidence such as my diary and witnesses).
Conclusion: We need the evidence of our senses to confirm that we have ever had a thought.
Objection: But look I’m thinking right now, that proves I can think.
Answer: But you didn’t just think, so you haven’t proven anything.
Objection: Yes I have, I remember thinking…oh now I get what you mean, hey but I’m thinking now.
Answer: No, you didn’t.