[usrusr]

So true! On the job, almost all of your new knowledge is specialisation on an absurd level of being specific to your job and only to your job. Framework X isn't your specialisation, framework X is the most general knowledge you acquire while on the job. The specialisation is knowing the implementation Y built on top of X and remembering the misconceptions and politics that led to business decision Z which caused module Y to be implemented like it is.

All the education that came before that was to complement that on the job specialization. You start out very general (walking, talking, basic social behavior) and then dive into an increasingly narrow funnel of stuff that is somehow related to your future X,Y and Z that you will learn on the job, but is not not identical with them. Education is for learning the things practice won't teach you (an extreme example: knowing a bit about Plato or Cesar would likely be more relevant to making sense of Z than understanding the halting problem or being good at regex).