As the author of the accompanying article, Desmond Morris, said, what we are seeing here is the beginnings of "gorilla technology".
Does this mean that if gorillas are left alone (which they won't be) they will eventually (after several million years) get round to inventing the wheel, the toasting fork and the electric door chime?
Gorillas are peaceable creatures. Vegetarian too. Just imagine the civilisation they might have created if they'd got to the walking stick before us.