Luke: "I'm going to shake you so hard… I'm certain that you got nothing through the Force about my thoughts."
Ben: "Not everything is the Force, Dad. First you looked off in the direction where we had our traps and bodies and so forth the other night. Then you scanned the tree line all around, but not the lake. So you were thinking about avenues of approach toward the camp, which meant enemies, which meant Nightsisters. You checked the sun, which, since it's usually there, means you were really estimating time until sundown, so you were asking how much time minimum we had before the Nightsisters attack."
Luke: "Maybe it wasn't such a good idea to let you train with the Guard. You think you might be happier dispensing caf or sketching caricatures?"