If you do some pondering and meditating, Da will tell you. That part was added in the web version for a humorus effect and was not intended to offend anyone. If you love something let it go, and if it doesnt come back, hunt it down and kill it. I hope that clears things for you. Anyhoo, basically what that means is that there is no such thing as objective truth.
Every person has their own objective truth, which is viewed as subjective truth by everyone else.
Now nomatter how hard you try to convince him that the leaf is red, he still will not agree. The same goes for math. You can show him one marble in both hands, and compine them to equal two. And he will still say that they are three. My point is, that just because you see reality a differant way does not make your reality anymore significant than his.