Heh, you're incredibly myopic. Its a point in time slice of the constant evolution of our body of knowledge. First we think we know, then we know, then we know we're wrong, then we figure something else out. On and on and on it goes.

Its an interesting process, but it should lend some humility to people when they declare they know things. You only know that which you can reproduce and even then, you know *something* but not necessarily the entirety. I'm not really going to debate that, its self explanatory, don't read much more into it than that. Its not an attack on evolution, its a chuckle at the prospect of certainty.