Nothing contradicts our knowledge. Why?

That' not true. Do you live in a cave?

We learn new things all the time which contradict what was previously thought to be true. You can go all the way back to when man thought the world was flat and go from there.

Your statement is, to be kind, positively ludicrous.

Because you live on top of a proverbial ivory tower.

but it dose that all by it's self.  knowledge that is yet to be obtained is the knowledge that will differ from our understandings of today.  Our knowledge is currently limited to our current time and space.  what is around the corner of space and time is a constant opportunity for a contradiction to knowledge.

"It isn't what we know.  It's what we think we know and it ain't so."  Theolonius Munk. 

Where atheists will always try to supplant fact with their hoaxes (Piltdown man, evolution, other hoaxes) they must always pretend that their hoaxes are fact or they lose money.

To the contrary, fact such as our very existence is NOT subject to question.

We tell the difference by the process of falsification.  These are logical tests that prove or disprove any concept by test, experiment, and mathematical deduction.

Where atheism is a cult that depends on arbitrary obedience to argument only by authoirtity of other atheists and that in defiance of all reason, reason and fairness open our minds to greater possibilities than we could ever possibly acheive if we were limited down to the games of ignorant and abrasive atheists -- and their greedy ways.