Yup. They transfer energy.
Edit: Or even better, they allow energy to transfer to the ball.
Edit: Or even better, they allow energy to transfer to the ball.
I think this is really close, but would also add the multiple hinges and the complex elbow/wrist joints as well.I see the hand/fingers as a lever at the end of another lever (the lower arm), which is at the end of another lever (the upper arm), which is connected to the shoulder, which is connected to the torso, etc.
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