There is a heap of stones. At first the seemingly twiggish boy chooses the largest of the bunch. But giving all his back – “all” save tearing lean muscles from thin bone – he can’t shift the thing; not one grain. He tries his hand a few times beyond reason but not so much to waste the day, then goes about choosing a better stone. This one, the second or third largest, is a better shape: a gigantic arrowhead. Lifting this rock will prove a brutal task, but when it slid a foot across the pile with his second push, he was certain.