A group of test-takers are all focused on a math exam. It consists of one problem, which most people cannot solve. Yet some of the test-takers get the right answer quickly and easily every time. Now here’s the surprise. The test-takers who can’t get the answer are all humans, and the ones who do get the answers are all chimpanzees.
This remarkable math test, which chimps can ace but humans fail, is the brainchild of Tetsuro Matsuzawa. He’s a
