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by londons_explore 1175 days ago
I think it's because the 38 muscles they have given their robot hand don't map perfectly with real muscles in a real hand.

In particular, there seems to be not much ability to move each finger left or right. For example, actuator 14 lets the baby finger swing outwards - but now try to stretch your baby finger out, and you see it can swing much further than this robot finger can swing out, and the pivot is closer to your wrist, allowing more reach.