Comment by colinmhayes

I just graduated from a top ten computer science program in the world. The department recorded all the lectures. By the time you got to the upper level classes completely booked 200+ person lecture halls would have less than 50 students show up because everyone watched online. The recording system allowed you to watch at 1.5 or 2x speed and skip to the next slide when someone asked a stupid question. The math department had a similar system for the calculus courses except they modeled the schedule around MIT's and just posted the MIT lectures that corresponded to each class.