Off the top of my head, I can't think of a takedown or throw that doesn't use opposing forces, except some that I consider esoteric - meaning they don't have direct application (and even most of those require opposing forces). Can you describe one or point me to a video so I can understand what you're talking about?When I refer to throw I don't mean the conceptual energy "throw". To be more specific, a technique to take an opponent down. This include throwing, sweeping and takedown techniques. The Tai Chi style I studied had takedowns. Not all takedowns require 2 opposing forces to be executed by the practitioner.