Sometimes you have too much of it, and sometimes too little. “Focus” is hard. Finding the focal point of a lens is hard. Thick telescope lenses aren’t quite the same as the glasses on some people’s noses after all. If you look at the average picture on Instagram, finding focus with a camera is also quite difficult. Even if the photographer’s eyes aren’t unfocused. Focusing your brain is complicated too. Sometimes, you’re so focused that the world around you seems to disappear. Other times, you can’t seem to focus at all. How do you focus your eyes? How do you focus your brain?