quadrant target.  Spock was silent for what seemed a long time, watching me with his usual cool fascination, no doubt, as I did my best to sweat out my personal demons at the expense of a supposedly indestructible robot.  In the end, they both managed to outlast me. I stopped before I started to stumble, but not before I was forced to suck in air by the lungful, or before I raised dark welts on the edges of both hands. I still secretly believed that if I could push myself just a little further, a little longer, I'd finally beat out the last of my uncertainty and guilt. But I'd entertained this secret belief for at least three weeks 