Archimedes spent most of the rest of the day trying to put a new edge on the flint knife he’d received in trade. From the look of it, he didn’t do a half-bad job. The kid was a quick learner, for sure. He took his prize to the elder, who I decided to name Moses for no good reason that I could think of. Moses looked at the result and nodded in approval. Okay, he actually did kind of a circle thing with his head, but it had the same meaning. He spent an hour showing Archimedes how to get the last bits sharpened.