"Okay! So. First thing we gotta do is make the arrowhead." He picked up a large stone and got to work.  From the start she could tell it was going to be a tedious process. She wanted to know more about him, and couldn't help asking questions while she watched. He broke the stone into smaller and smaller pieces using the various bone tools around him, until he had the desired shape. His progress slowed the sharper and thinner he made the arrowhead.