A primary task of professors is communication with their students. Communicating typically involves lecturing, clarifying uncertainties, and receiving feedback. Lecturing happens at fixed times, but receiving feedback and clarifying uncertainties are continuous tasks.
My question is related to clarifying uncertainties. This is an extremely important and continuous task. Although a professor resolves some of the student's uncertainties during lecture, students may have questions at any time and so there is a need for professors availability.
In this context, I want to know the best methods followed by top professors at top universities on uncertainty clarification.
Are they good methods for clarification during our times, or are there other better methods clarifying student uncertainty?