the music sucks
Well, I'm not sure this is a constructive feedback
Your assertion that 90% of hand movements involve grasping objects or picking up objects
is also very dubious.
It's known that the major part of the use of our hand is just grasping. You can grasp different objects in different ways but is one movement.
90% maybe is exaggerated, but I was trying to summarize in only one frame the whole preface.
Your assertion that you need N motors for N movements is wrong.
A small three-wheeled robot with 2 independent motors has 4 basis movements,
forwards, spin right, spin left, or backwards.
You're talking about another context. I don't have weels, because I tried to build a hand, not a car.
I just said taht moving N fingers independently requires N motors.
It is also quite clear in your video, that the forearm is being manipulated off-camera
by a human, and not by any kind of robot arm mechanism.
Well sorry but here I understand that you didn't realize what the purpose of the video was.
I just wanted to realize the end effector. All the tests, are tests on the functionality on the end effector.
I never said I created a robot capable of playing chess, did I?