Skill, Proprioception, Parallelism

Skilled behavior is continuous, but that does not preclude that it also consists in discontinuity.  It is still constituted by multiple coordinate components, the multiple coordinate parts of each leg, and the coordination of those groups, the balancing of the arms, the guidance of the eyes, etc.  So, skilled behavior consists in a Unity of a Multiplicity, or, a Totality.  In a Totality, neither its Unity nor its Multiplicity is privileged, so to maintain balance, some internal function is involved  In motile beings, Proprioception is one such balancing function.  But Proprioception is the Idea of the Body, in Spinoza's doctrine.  So, apparently contrary to his Parallelism, Mind does exert Causality on Body, especially in the performance of skilled behavior.