Capuchins Put A Monkey Wrench In Our Knowledge Of Early Human Tool Use
Monkeys are messing with where we think early humans created tools.By Evan Thomas | October 19, 2016
Every time scientists found flakes of chipped stone in the fossil record, it was taken as a proud sign of humanity's genius. Now some monkeys are screwing all of that up.
Humanity's early ancestors — like Homo erectus — used sharp rocks as tools, and they sharpened those rocks by chipping away at them until there was an edge. That left piles of stone flakes, so whenever scientists found those remnants at ancient sites, they assumed it was someone making tools.