"Proof" simply means you haven't seen the exception. And since you can't prove there isn't an exception then you can't prove anything.

Finally, something we can all agree with:
 

An exception to what?

To what you are trying to prove. Evidence to the contrary in other words.

There isn't really any possible exception to "cogito, ergo sum". Unfortunately, there also isn't anything else that can be concluded using it.

I think therefore I am.

how . . . clever . . . of you to create a thread to which any response can be slammed down. :eyebrow:

.

No, but I can prove to me that you don't exist. That's all that matters.

What is it of you to comment on it? More clever than me? Okay, you win. Hands down.

"What is it of you?" I have no idea what that means. Or why I win. I think you do, cause, you know--it was clever!

. . . and also a bit mean.

and I was going to make a sex comment, along the lines of if we were having sex you'd know I was real . . .

but then I thought--but he could be thinking of Angelina Jolie at the time.

. . . so I didn't! :)

I am so confident about that.....I had to do this

This is a Far Side cartoon, isn't it? Or at least something from the golden days of the New Yorker?

You all know the one, right ... blackboard full of equations, chalk falling to the floor, another scientist looking guy comes into the panel and says something like "My God, Johnson finally proved he doesn't exist!"

I don't think any computer program can be as successful in fledging full out responses, threads, emotions and substance that Dwellars crank out on a daily basis. We all exist whether we want to believe it or not.

Computer program? Let's start at the top. My eyes absorb some radiation and it gets converted into a neurochemical phantom... where? ...inside my head. Oh. Actually all I have to go by is inside my head, I can't even count on the eyes, the radiation, or the assumption that I'm even looking at a computer screen; much less that anything, even a computer program, is making the pixels (do pixels exist?) change configuration.