"It gives a "remarkable insight" into human behaviour, she said, particularly how Homo sapiens living as long as 42,000 years ago could shape "such a perfect object" with the knowledge it could be used to hunt animals."

It's a heavy object that you throw, shaped better to fit your hand as opposed to a rock. It's not that complicated.

Also, most boomerangs (throwing sticks) aren't made to return to the thrower cause that would be a bad thing.