I exist, and I perceive a world around me. My natural inclination is to care about the world around me, and the people in it. Therefore, the world being real to me, and the perceived existence of the people around me being important, the question of whether they exist as consciousnesses separate from my own is moot, because I'd treat my reality the same way regardless of the answer. However, that's not exactly what you asked, and depending on the answer, maybe that's not what I
should do. You asked me to prove that they do, in fact, exist as separate entities. Beyond a vague "it's the simplest explanation," I can't. Even if I wrote a hundred page treatise, I couldn't prove anything substantially. Like Socrates, I'll readily admit I don't know the answer.
Speaking of which, this seems like a very Socratic thing to do, to walk into the forums and ask the people in the street and on the boards what they make of the question, then deconstruct their answers.
Zarmi said:
There is no reason to state why I, or anyone else for the matter exists, you proved the philosophical point in the name of the thread by quoting Decartes. I think, therefore I am. It's obvious. Note when you dream, your thoughts go about without you having any control over them, but we exist here in this world because we're able to think. We're able to comprehend and consider, and generally think stuff through.
Decartes made a good point saying that if we think, we exist. Prove him wrong, instead. I dare you. No discussion value in this thread.
Well duh, but you're ignoring the second part of the question: prove others exist (as separate, discreet consciousnesses). That's the far trickier part. Furthermore, your implications that Descartes was infallible are kind of...wrong. Descartes was a genius in not only in philosophy as we know it, but also in the natural sciences and math. However, an in depth examination of many of his texts reveals a lot of debatable - even logically
bad - assertions.