I'd say a better distinction is more important for the students. Teaching is a skill that the accumulation of knowledge doesn't inherently strengthen. Forcing r

I'd say a better distinction is more important for the students. Teaching is a skill that the accumulation of knowledge doesn't inherently strengthen. Forcing researchers to teach against their will for professorship on the strict basis of knowledge typically causes the students to receive a lower quality education. If we're talking about bottlenecks, I'd say the number of topics that are ruined for potentially great researchers by horrible lecturers is a bigger problem. Sidenote - Writing about this topic reminded me of the lengths Andrew Ng went through to achieve excellence in his role of being a professor in all aspects of the job (in this case what he went through to become a better teacher): https://www.linkedin.com/pulse/20140320175655-176238488-learn-to-speak-or-teach-better-in-30-minutes/ https://www.linkedin.com/pulse/20140320175655-176238488-lear...