Jake squints at the museum plaque. “Is it velocirapter or velociraptor?”“Spell it right and I’ll buy you a dinosaur costume,” Sam says.“Deal,” I tell him. “But only if you can…

“Or: The One Where Jake Calls a Stegosaurus a ‘Stego-sore-us’ and Sam makes that face.” I was halfway through explaining why duck-billed hadrosaurs are the introverts of the Cretaceous when…