without reading your nonsense second paragraph, it's because
http://en.wikipedia.org/wiki/Epistemology
you might want to get one too. just make sure you buy a good one from an authorised retailer.
You're not doing much for the whole "stoners are idiots" stereotype with this crap. Take note, I'm not calling you an idiot, but you sure are posting some idiotic shit. Move along, you're clearly not emotionally or intellectually capable of discussing matters like an adult.