He’d said a lot more, of course, about how I was whoring after man’s knowledge instead of God’s, but still I decided to ask him about trigonometry. Here was a sliver of man’s knowledge I was certain he possessed. I scribbled the problem on a fresh sheet of paper. Dad didn’t look up as I approached, so gently, slowly, I slid the paper over the blueprints. “Dad, can you solve this?”
