Abstract: An adaptive positioning system embodiment comprises a plurality of longitudinal elements. At least one frame member has an adjustably fixed spatial relationship with a plurality of longitudinal elements, thus forming a conforming assembly capable of supporting a person. The conforming assembly is supported by support means comprising at least one bearing and facilitating rotation (by rotation means) of the conforming assembly (and a supported person) about a longitudinal axis. Control means generate at least one control signal for controlling the rotation means to adapt the positioning system to an individual person, at least one control signal encoding at least one set point and a function of weight distribution on the conforming assembly. The function of weight distribution may be nonlinear. At least one optional multiuse port and/or one or two multiuse optional lateral reverse-foldable longitudinal assemblies may be added to the conforming assembly.