Corollary

The foregoing postulate has, of course, its corollary:  the language of the course, IS THE COURSE.  You notice this in the sciences.  Take math for example.  You must learn the definitions of sign, cosign, variable, set, subset, null set,  operator, etc. in order to begin to ask insightful questions of your professor.   And those insightful questions speak volumes on your behalf.  So, we've made progress:  read the books and talk to the teachers.