But if a child leaves school thinking that humans don't share a common ancestor with other apes, isn't the truth just that the education system failed them?

When he returned to his capital ahead of schedule, all the people there found out that the King had been moved by an ape's tears.

But a juiced-up ape can become something more than fun for us - he can shock us with his power, even inspire terror.

There is no doubt that most of the genetic differences between humans and other apes - and between different human populations - are due to genetic drift.

Before this discovery, tactical deception was thought to be restricted to "big-brained" animals like apes and humans.