Some explaining, but mostly the job is teach students how to think critically, seek resources, manage time at short medium and long terms, express yourself orally and written, build endurance for boring things, and most importantly to read.
I can explain riding a bike all day. But that’s not how someone learns to ride.
This is so true. By college, far more learning and work takes place independently. A professor will teach 3-4 hours per week. Definitely not enough to “explain everything”.