At any rate, I finally understood how they turn the bit. They use the swoop on the end of the bit to ease into a direction change. Putting the bit at 12 o'clock puts the curled up toes straight up and makes the bit come up toward the surface. Putting the bit at 6 o'clock puts the toes down and it swoops deeper. In theory, putting the bit at 3 o'clock, as they kept doing yesterday, would make it turn right. This bit must have come from the Obama administration, because no amount of coaxing could get it to move to the right.