[lo_zamoyski]

> At some point in order to be effective in any field you need to eventually just KNOW the field, meaning have memorized shortcuts and paths so that you only spend time working on the "real problem".

Yes, there is a "habitus" to mastery. It becomes you, or you become it, so to speak.

But pedagogically speaking, I think what people miss is that you can't really use or think about something you don't remember.