Nirg,,,haaaaaa,lolololol, no flame war here,,,,,,I diagreed with your discrpition 100%. Sorry.
the word "relax " here is a controlled relax, in realrity you can not have 100% relaxzation, you only relax to a levell that you can fully controll your touch. Each person's build is different, so if you have a weak fingers, it is likly to will relax less; on the contray if you had a stronger finger, you have a better control, therefore, more slack is allowed. I hope this clears the general misundersatnding about relaxzations.
If you find too hard to undersestand, think about the top sports man, they are strong but relaxed , speed/power comes from both mental and physical relaxzation. I think the only person knows if I relax or not IT IS myself, no one else., watch closer, my hand had a slight rebound action as a result of key bed pushes up. If my hands starts to wobble, this means my force is not played into the key. Newton's law for every force there is an equal and opposite reaction. By the way my arm is all muscles from swiming. And If you can do 80 laps like me in 1 hour(all styles). and you know why..

. How much force I need to show is what you see in the video, only if your fingers are "weak", and you may need use your whrist and other parts help you to strike the key. Watch closer, all my shoulder weight in "lean" into my playing. What I called this "weight playing". I think you better off read some Franz Listz pupils book/teachings and his former students.
Anyway, this video just shows you that DO NOT JUDGE PEOPLE BASED on its looks. Because peopel always get the wrong impression, including you. No, I am very intense, and stressed, I have sore shoulders, backs, whrist, and finger tips. I play xxx
The thing here is I have whirst, shoulder, arm, all sorts of resources for me to play the piano, I know when to use it, when not too I dnt have to pretend to be showny, or make some bs movements to impress people. Because I know I am relaxed.
Number 1 rule here is "finger power " comes first before anything.And I did not say this, some one said it before me in 1955. and I beleived him so as others. Ask youself, how often you get sore forearm or whist after long training, but not much on the fingers..It is because the muscle types are different. Put this way, I dnt have these problems, because I focus. ;DI can see your scientic observation is biased and wrong.
If you can do better please Show your video then
