The flailing of a gymnast who’s missed a step on the balance beam might not be far off from what the rest of us experience every day. Each step we take is really a tiny fall, a mathematical model suggests. The random-looking variation in our footfalls is actually a series of corrections. Our strides are all screw-upsâbut thanks to the fixes that happen without us knowing, our walking routines look like a perfect ten.
Manoj Srinivasan, who runs the Movement Lab at Ohio State University, an