Fun article, but it's a pity they don't specify exactly what "lots of training" means: "Tomasello and his team wondered if such a rare ability extended to hand gestures and tested chimps to see if they could understand pointing. To their surprise, the chimps did badly, able to learn the meaning of a pointed finger only after lots of training."

Because my own child also understood what a pointing finger meant only after what I feel was "lots of training".