I like the philosophy aspect of all this, but water being wet is like a programed fact in our minds, placed there by evolution. You'd think all these great philosophers and guru's would have stopped to think about that.
And about trees, they make a sound when they fall wether your there or not, its just hard to imagine stuff happening without us being there to see it.
And God said, 'Let there be rock!'
-And it was good
-And it was good