I took this concept and applied it mentally to my piano playing. Could this concept possibly transcend basketball into music as well? Well, this is what I got from the video. The index finger is the strongest AND straightest finger on both hands. The third finger or the middle finger is considered the "middle". However, it is not the center. If you were to move your hand like you are turning a doorknob or gesturing, "so-so", you would see that your middle finger is moving around a lot. If you pay more attention to your index finger, it doesn't move around as much. It is actually the center of gravity in your hand. In learning this, I experimented and there was more of an ease in playing. The middle finger may have two fingers flanking on each side but it is the index finger that is the most stable and has the center of gravity.
Try it out and let me know what you think! Enjoy!!