Featuring a zorb-like unidirectional treadmill and three motors facing in each of three directions, this apparatus adjusts its weight to precisely counterbalance a person standing on top. If the person walks, it moves accordingly in whichever direction, such that the person looks as if he is walking on water.-- Voice, Jan 14 2021 Is the walker inside the zorb, or on top?-- pertinax, Jan 14 2021 He's on top. Although a version with the zorb on top with the walker may be fun in rain or storms. On the down side it would also be safer.-- Voice, Jan 14 2021 random, halfbakery