Why are 2 1/2 high pyramids (i.e., 2-2-1's, Swedish Falls, 3-3-2 stag pyramids, 2-1 cupies, etc.), rewinds, one-arm stunts other than the cupie (i.e., one-arm heel-stretches), and inverted basket tosses (i.e., x-out fulls, back tucks, layouts, etc.) illegal at the high school level? I know that...