Scott H YoungWe tend to add things, even when subtracting is both logically equivalent and more practically useful. We want to get in shape, so we add exercise to our schedule. We want to succeed at a project at work, so we add it to our to-do list. We want to learn more, so we stack up more books. What’s missing is that, given our finite time, every addition necessarily implies an equal subtraction. The thirt
