Now this is wierd and interesting... Basically, the guy makes a thread (basically screws and nuts have threads, but only in one direction) for a "bolt" (for la

Now this is wierd and interesting... Basically, the guy makes a thread (basically screws and nuts have threads, but only in one direction) for a "bolt" (for lack of a better term, axis perhaps, two-directional screw?) that goes simultaneously in both directions... But that's not the point. There may be some analogy to this structure with respect to Physics... In other words, there may be waves, or wave-like structures which have dual chirality... In other words, let's say that a wave is three dimensional in nature, and has a certain spin, and a certain chirality for that spin. And, that given a revolution, that one revolution gives you a certain amount of forward distance, whether that distance is ultra small or whatever the scale is... But now, if the substrate (if there is a substrate!) is "threaded" in both directions at the same time, then this would mean that the same spin (depending on where it is placed on the threaded substrate) -- could in fact use the same spin that it uses to go forward -- to go in reverse! It's a super-weird effect, and would take some time "wrapping your mind around". Also, we see the same pattern (possibly) but in 2D space in the curves and counter-curves, spirals and counter-spirals, in such things as Sunflowers... So, there's some connection here to Physics, waves, spins, 1/2 spins, and the like... Opinion: Worth investigating further...