Note 68 — XI THE EXISTENCE OF THE WORLD AS A LOGICAL PROBLEM

The ambiguities reside in the possibility of treating the "muscular and other bodily sensations" as meaning something other than data of motion and corporealness—however these be defined. Muscular sensation may be an awareness of motion of the muscles, but the phrase "of the muscles" does not alter the nature of motion as motion; it only specifies what motion is involved. And the long controversy about the existence of immediate "muscular sensations" testifies to what a complex cognitive determination we are here dealing with. Anatomical directions and long experimentation were required to answer the question. Were they psychologically primitive data no such questions could ever have arisen.