Aha moments are what scientists, discoverers, and explorers live for. That moment when your view of how the world works or is changes. If your discovery is true and vital, your model of the world becomes more accurate, more realistic. You have found something out!

Things have changed; they are not quite the same.

These moments sometimes involves putting two unrelated facts together. I remember doing exercises and practicing flash card drills years ago in school. We students reluctantly accep...