For instance, physicists now know that electrons don’t orbit the nucleus the way that planets do. In reality, electrons move in “probability clouds.” So what do you tell a sixth grader? Do you talk about the motion of planets, which is easy to understand and nudges you closer to the truth? Or do you talk about “probability clouds,” which are impossible to understand but accurate? The choice may seem to be a difficult one: (1) accuracy first, at the expense of accessibility; or (2) accessibility first, at the expense of accuracy. But
