Re: "Things can be known without first being experienced. "
True.
But that is not the issue at hand.
The issue is this:
"If a thing has never existed, it therefore can not be known, because at the very moment in time that it is conceived of, even as a thought, it therefore does already exist and is thus known.
And if something is known, then it has already been experienced!
All this talk people always say like "Only G-d is Perfect!" or "It's impossible for G-d to make a mistake!" is just a bunch of ridiculousness because being Omniscient, Omnipotent, Eternal, and Unchanging, doesn't in any way infer some proof that a Supreme Being is incapable of making a Supreme Mistake!
I dare you to prove me wrong!