true, but they covered so much irrelevant crap.

They should have just said:

"Proper pedaling motion is a perfect circle amade with both feet at a 180 degree relative point in rotation. What this product does is ONLY transfers power when both feet are in their proper places int hat rotational pattern. This will help with pedaling technique through both positive reinforcement, as well as the tactile feel of either transferring power, or not transferring power. It does this via a special clutch....which works liek this....."

He didn't have to breeak it down into basic physics and the history of the crankarm