Ayumu the chimpanzee didn’t hesitate. Shown the numbers one through nine on a computer touch screen, he tapped the numerals in order, even after two through eight had disappeared behind white squares within a fraction of a second. The human audience watching a video of this performance began to murmur as they tried and failed to keep up with the fast-fingered chimp.
“Don’t worry, no one can do it,” Kyoto University researcher Tetsuro Matsuzawa reassured them with a laugh. “It’s impossible for you.”