Here is something I did not expect to discover while writing a textbook about American Sign Language. The shoulder knows things the hand cannot say.
That sentence sounds like metaphor. It is not. It is linguistics, documented and measurable, and it has been sitting in plain sight for as long as deaf people have been signing to each other. The position of the arm, the engagement of the shoulder, the extension or contraction of the elbow: these carry meaning. Not incidental meaning. Not decorative meaning. Semantic meaning that changes what a sign communicates even when the handshape stays exactly the same.
Consider what this implies about how consciousness expresses itself through the body.
We tend to think of language as something that happens in the head. Words form in the mind and then exit through the mouth, or through the fingers if we are typing, but the origin point is cognitive, neural, somewhere behind the eyes where the self is supposed to live. The body is just the delivery system. The meaning is elsewhere.