Yes, I was surprised too, but then realized that it was not too surprising. It's not too uncommon for kids to count things. They also like counting the tick marks when Axes->True.
Some things should be simple enough for the youngest kids, as complicated as counting, and CA is probably one of them, though we haven't done the rules for anything more complicated than rule 254. Some of the common primitives of Wolfram Language are like that too. I am intrigued by the question of what conceptual primitives are prerequisites.
