OK, we don't actually know what the No. 1 cause of tardiness is, but it could easily be having to search for your kid's other shoe every time you leave the house.
How about shoe locators? This idea got some airtime on the TV show "Parenthood," and we think it's brilliant. Kind of like those audio key finders, only they're built right into kids' shoes. These radio-frequency devices could be networked, so you'd only have one "clicker" to find any shoe in the house. Hear noise coming from somewhere besides the kid's room? There's your missing shoe.
Or something like that. We're not engineers.
Up next: You know what would take 10 years off?