[bosco_mcnasty]

All right now, here's the big question: how do you know that the evidence your sensory apparatus reveals to you is correct? 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 which stimulate your computing center. In other words, all that I really know about the outside universe is relayed to me through my electrical connections.

          Why, that would mean that...I really don't
          know what the outside universe is like at
          all, for certain.