chapter 12 ensuring a strong c e n t e r of i n t e r e st When I was a youngster, my cousins and I used to go out into the hills to play with our bows and arrows. I had a cousin who would never say beforehand what it was he was shooting at. He would wait to see what his arrow hit and then claim that was what he meant to hit. In painting, like target practice, we need to know what