The preference for live sessions might also be a form of signalling and desire for a more exclusive/authentic experience. The signal comes from getting the professor's actual "live" time, even if production quality is lower. Also, top professors might already have video content that is easy for anyone to access, while getting to attend a "live" Gad Allon class is much more exclusive, even if over Zoom. Furthermore, there might be an identity aspect to this as well, for even if all of your courses were fully available in recorded format, someone who took all of those would probably never identify as "one of Gad's former students."

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