Have you ever noticed that when you’re boiling water and the kettle starts to whistle, you rush to turn off the heat, like something bad is going to happen? It’s a kettle, so it’s not like the water is going to boil over onto the stove. It’s just going to keep whistling, perhaps a little louder, and continue shooting a jet of steam across your kitchen. Sure, eventually the kettle will run dry, causing some real problems. But we tend to react like the thing is about to explode. Crazy, ain’t it?