-Well, I think, therefore I am.
-That’s good. That’s very good. But how do you know
that anything else exists?
-My sensory apparatus reveals it to me.
-This is fun! Now, listen. Here’s the big question. How do you know that the evidence your sensory apparatus reveals to you is correct?
If you’re talking about what you can feel, what you can smell, what you can taste, and see, they’re really simple electrical signals interpreted by your brain.
-What I’m getting at is this. The only experience that is directly available to you is your sensory data. And this sensory data is merely a stream of electrical impulses that stimulate your computing center.
-In other words, all I really know about the outside world is relayed to me through my electrical connections.
-Exactly!
-Why…that would mean that…I really don’t know what the outside universe is like at all for certain.
-That’s it! That’s it!
So we are like blind people walking around with these feeble little senses to determine what reality is.
