Some incredibly annoying questions:

Here we go:

1) How do you prove that you're sane? Is there possibly any objective way to conclude that a person is absolutely and consistently sane?

2) How do you know that i see colours the same way as you? maybe my purple is your yellow and vice versa but you've been brought out to think its the same colour (it would be internally consistant wouldn't it?)

3)What do descriptive words mean? How can we be talking about the same thing when we have different mental pictures associated with the same words.
what does this imply about symbolic language?

submit your futile answers! mwuahahahaha *evil grin*