Studies like this show how far Darwinists are willing to reach in their efforts to indoctrinate.
From Primate Culture Is Just A Stone's Throw Away From Human Evolution, Study Finds
"For 30 years, scientists have been studying stone-handling behavior in several troops of Japanese macaques to catch a unique glimpse of primate culture. By watching these monkeys acquire and maintain behavioral traditions from generation to generation, the scientists have gained insight into the cultural evolution of humans."
I guess if any scientist wastes 30 years watching monkeys play with rocks, he has to come up with something.