Who would have thought that the first practical home application for quantum mechanics would be the lowly bathroom scale?
[T]he fact that reality does not exist until someone tries to measure it is, I think, one of the great discoveries of the twenty-first century. For generations, dieters have fought the unwelcome tyranny of the weight scale, trying one new diet after another in a pathetic and usually futile attempt to halt and turn back the inexorable and every upward advance of the scale. And what has been the result of all of this effort? Depression, self-loathing, and an ever shrinking sense of self-esteem. But now, modern science finally offers the overwhelmed dieter a way off the never-ending cycle of weight loss and then more weight gain entirely. If reality does not exist until one attempts to measure it, then what could be simple than not weighing yourself and telling everyone who asks that you’ve lost weight? Reality, after all, does not exist until you step onto the weight scale. So don’t step on it. This will make you much happier than worrying about calorie counts and weekly weight checks will, and quantum mechanics is all about making you a happier person, isn’t it?
Heisenberg may or may not have been available for comment.