Rick,
I was never far away..
Friction produces heat all right however I cannot calculate how much. But this isn’t a maybe. If you want to move something you have to overcome friction. This poses no problem for fast strong movements as for these movements the force of friction is comparatively weak. For precise moments however there is big difference between the power you enforce and the final effect because of friction. That’s why I thought that nature has had to come up with a solution for that. I don’t know what solution however. It might a muscle vibration. Vibrations reduce friction and 100Hz vibrations do occur.
Further, dopamine, according to the dopamine theory of parkinson’s disease, will cause movement when the proper receptors are activated. But how than do you explain the differences between the three states I described. The dopamine state feels different! It isn’t just making movements possible, it reduces the friction. It does so also at moments it shouldn’t
Joop-