[MarkMc]

There are actually two reasons why 3blue1brown video lectures are superior to old fashioned professor-and-blackboard lectures:

1. A video with animation and clear text and colours can be far more effective than chalk on blackboard. For example, watch 60 seconds of this video on Fourier Transformations: https://m.youtube.com/watch?feature=youtu.be&v=spUNpyF58BY&t... Such an effective, efficient presentation simply could not be done with chalk and blackboard.

2. The internet provides a way to watch the best of the best lectures in the world. Grant Sanderson, the guy behind 3blue1brown, is a Khan Academy talent search winner: https://www.khanacademy.org/about/blog/post/125876900000/mee...