ho works like a scientist in a laboratory, he elaborated a methodology of research and invented his own tools of experimentation. his "dream machines" remind duchamp's ready-mades and tinguely's machines à ne rien faire (useless), mainly because they look more like industrial products than pure aesthetic creations. ho's constructions are rational artifacts invented to put his own body in situations of tension. the purpose of his persistent quest is to experience primordial perceptions at their phenomenological level.