MUD Mired in time...

If momentum is drained by resistance, then a plan B evolves. The several anatomic spokes of wheels lock into a rigid single but quite large wheel. That big wheel only uses a short arc at the top of that wheel – the flattest most centered arc. This is another way to have forward progression with low vertical rise & fall (energy saving). This interpretation is over & over missed as just about every malady discussed having a gait abnormality is said to have “SHORTENED STRIDE LENGTH”. That is, shortened step & stride length as a hallmark of the malady . It is NOT an abnormality. It is a clever work around for loss of momentum or resisted motion.