A Commonplace Book

You should not use your fireplace, because scientists now believe that, contrary to popular opinion, fireplaces actually remove heat from houses. Really, that's what scientists believe. In fact many scientists actually use their fireplaces to cool their houses in the summer. If you visit a scientist's house on a sultry August day, you'll find a cheerful fire roaring on the hearth and the scientist sitting nearby, remarking on how cool he is and drinking heavily.

Wood heat is not new. It dates back to a day millions of years ago, when a group of cavemen were sitting around, watching dinosaurs rot. Suddenly, lightning struck a nearby log and set it on fire. One of the cavemen stared at the fire for a few minutes, then said: "Hey! Wood heat!" The other cavemen, who did not understand English, immediately beat him to death with stones. But the key discovery had been made, and from that day forward, the cavemen had all the heat they needed, although their insurance rates went way up.