Two hands have ~60 degrees of freedom (4 in each finger, 4 for extension/flexion/abduction and a few for a pose between the hands). You can speak with your hands! Or perform (shadowgraphy, puppeteering, magic).

In computer graphics rendering hands and hands gestures was considered very challenging for a long time (This was, for example, a PhD thesis of one of the Pixar co-founders, back when computer graphics was just starting). And it is still very challenging to render a close-up of a hand performing a natural looking gesture.