An interesting property of wall plane insides that Alien Jon showed to me while I was in Boulder for Christmas: the arms analog to an airwrap is a 4-beat windmill or watermill and in theory this is just a truncated version of a hyperloop/inversion. Jon pointed out to me, though, that when spinning clockwise with the crosspoint pointed down (as it would be in an airwrap), the only watermill one has access to in wall plane has the left hand leading. If we try to get the right hand to lead instead, we either wind up with a 2-beat mill (and thus not an airwrap) or the crosspoint shifts to the up position and then we get our inversion. This pattern reverses if we go above the shoulders, however, and to make matters even stranger, both sides reverse if we switch the direction of the poi to counter-clockwise. Thus suggesting that there are four zones around the body at which these moves can be accessed and they are arranged in something of a cubic checkerboard pattern.

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techblog313.mp4