We are unable to discount the hypotheses that the world began three years ago.
From theme song of the show: Boken Desho Desho, boken de ga ... its a good song
If something must be true for us, as humans, to exist, than it is true simply because we exist. 
That's why I'm going to kill you and see how Haruhi Suzumiya reacts.
Don't think it evil. I'm sure it's ... On our side! 