People have a hard time getting what they want; in fact, the things they want can be incompatible with each other. A German physicist named Werner Heisenberg discovered an analogous phenomenon with his uncertainty principle. Studying matter at the atomic level, quantum physics, he realized that the act of measuring affected the object being measured. As a result, one could never accurately determine both position and momentum of an electron with precision. The attempt to reach one of these goals hurt the other, and a similar phenomenon is found in our everyday lives. In William Shakespeare’s Macbeth (1606), the p