I see in the “People of the Web” the last interview to the Professor Walter Lewin, at MIT. I have no comments about him and his classes, only two comments: 1) the great phrase: “Physics work!”, and 2) can other people regarded teacher? I don’t need to think more about it…
The old school devops 
Watching things like Walter Lewin classes makes one feel really sick about how teaching is done in Spain… we are many light years lagging behind the MIT, but you already know that, I guess 😦