The Boy watched a documentary with Papa about the Cretaceous–Paleogene extinction event. His verdict: “I think I want to be a paleontologist now.” He thought about it a moment before amending it: “Well, I have just been thinking about it since yesterday, so that might change.”

Still, this evening after dinner, he was keen on going fossil hunting. After I told him he couldn’t just randomly dig holes in the backyard — “We have a dog to do that; we don’t need more.” — I suggested we look in the creek. We found nothing, as I expected, but it didn’t dampen his enthusiasm. “After all, we found some really cool rocks.”

That we did.