> Multipliers are defined to be a combination of rotation and scaling. True, my point was only that the definition obscures the fact that rotation (and specifi

> Multipliers are defined to be a combination of rotation and scaling. True, my point was only that the definition obscures the fact that rotation (and specifically the stunning relationship between trigonometry and exponential functions) is the key to the answer of "why". Without that, I think the video is just an exercise in indirection.