Best story of the month

It's from Steve Mirsky's "Antigravity" feature in the current (January, 2007) Scientific American, and follows.

"I read a short item in the publication 'Funny Times' that concerned a visit to a grade school by a firefighter. He showed the students a smoke alarm and asked if they could identify it. One kid responded, 'That's how Mommy knows supper is ready.'"

Maybe it's true and maybe not — but that's irrelevant.