To spring back and fall forward or vice versa is as a misquote the question. Harry Boris a long time ago suppositioned that walking, scientifically speaking, is simply a matter of controlled falling. This in itself constituted enough material for Peter Land to videotape as a body of work pertaining to how outside forces affect the body. But midway through a fall, descent is frozen as if the hand of God interceded. The expectant and resultant onomatopoeia to conclude said action then becomes a gerund suspended as syntactical pause. Or a burp if you will signalling finally the halfway point. Somehow to indicate time moving ahead or backward as a physical pratfall appropriately encapsulates kinetic theory as perhaps something filmic.
So it seems that Eadweard Muybridge guides my current path, however circuitous its route may be, one frame at a time. At last count, only fifty or so frames remain.