He was on trial in an orchestra 1.5h away and needed something to do. I had just finished my last problem from the most recent batch and he got curious. He's the only one in the family that isn't a maths person,not because he wasn't but because his life brought him elsewhere. Now he had the time and was bored out of his mind.

He had just started programming (scheme, as his old man:) ) and wanted something to do.