Re: Biomechanics of simple throwing
Well... I am into biomechanics and I know very well that with present means of measuring it's not practical to do even descriptive biomechanical studies of all of the variables. Optimizing a movement would be an immense task. Inertial characteristics of each body segment, neural transmission rates, muscle contraction rates, age-related changes in elasticity, bone density, and on, and on, and on. You could "do" a descriptive study, possibly, of someone throwing someone else using several cameras and accurately calibrated space, over top of a force platform (in 1979 this was a 30 x 60 cm bathroom scale that cost about $40,000 - hate to think what they are now).
However - just because it is difficult to study doesn't mean that biomechanics doesn't determine what happens in aikido movement - just that we don't fully understand all of it beyond what we experience.
The whole thing about the scientific method is curiosity and not accepting anything on faith - and looking for what's really happening.
IMO that is...