“We need more spotters!” I called to the girls on my cheerleading squad. We were attempting to build a new mount, one where the girl on the top of the pyramid would be tossed into the air before being caught in the arms of two of her teammates standing on the ground. Before making that dismount, however, she had to successfully get to the top of the mount. So I called for more spotters. A spotter is someone on the ground who stands ready, arms outstretched, to assist the gal on top should she start to wobble. If she does, the spotter reaches up and holds her ankles to…