“No! Stop! ” as we were approaching the railroad tracks. I instinctively slowed down.
“What’s wrong? ” I asked.
“Railroad tracks”,  he said matter-of-factually.
“Yes, dear. But there’s no train. ”
“I know. Can we wait for one? ”

Hmm… I’m going to think about that. My kid finds the simplest things endlessly fascinating. I need to try harder to see things at their level.