My son, Ian, is 15 months old. He has a few words. As a baseball nut, I'm proud that he has mastered "ball." Lately, I've noticed he has a firm grasp on commands—like, "Ian, take this to Mommy." Or, "Hey, buddy, can you throw this in the trash can for me?" That last one came back to bite me recently. I'd misplaced my camera about a week before Christmas. It was one of those weeks that parents can commiserate with. On the particular day I recall seeing it last, I had to clean out our fridge, disconnect it, bring a new fridge in, take the old fridge out, reconnect the new fridge and clean up …