I studied evolution, fossil man, and human osteology quite a bit in grad school--six years worth.
"Irreducible Complexity" is on the order of "Bumblebees can't fly -- the math proves it!"
Math and philosophy are weak opponents to real-world observations. I wouldn't bet the rent money on it.
Anyone who includes "evilution" in their posts (twice!) gives away their premises rather quickly.
You are not doing archaeology or anything close; you are doing apologetics.
Your knowledge of irreducible complexity seems to be very limited. Go to the web and read about the recent discovery about the flagellar motor of a bacteria that looks like it was produced in a maching shop, meaning intelligent design. Or are you one of those who says, "don't confuse me with facts, I've already made up my mind because I don't want to be accountable for my actions to a creator God even if He exists. It cramps my lifestyle.