There is some funny stuff at the ICR homepage.

Stone Blades Cut Back Evolutionary Dates

Evolutionary anthropologists once thought that stone knives were developed in the late Stone Age, around 40,000 years ago. That figure was later revised to 200,000, around the Middle Stone Age, when stone blades were discovered in lower strata.

Now stone blades have been found in Kenyan rock layers dated at about 500,000 years old according to evolutionary estimates. Thus, the original claim that “40,000 years ago, man made his first stone implements” was off by over 92 percent, suggesting that evolutionary depictions of human history are unreliable.

Yup. Creationists penalizing science for challenging itself testing its results and becoming more accurate. Something their own theory can’t do.

…the stone knives were most likely made somewhere on the order of several thousand years ago, at least since the time of the Tower of Babel, circa 2200 B.C.

I’ll see your rock layer dating and raise you a “most likely”. Science!