I can see why you would think this was respoding to my post if you only read a fraction of the second sentence in the paragraph you quoted. Of course, if you read the whole paragraph (or better yet the whole post), you would see that I was not talking about “why” movie stars make more than teachers, I was talking about arguments people use to DEFEND the fact that movie stars make more than teachers on moral/philosophical grounds.
I am more than familiar with mechanics underlying the marginal revenue productivity of wages. I am glad to see you mostly understand it as well. I would like to think my corrections of your post on this subject last year have something to do with your grasp of the subject. Yet I wouldn’t want to flatter myself too much to suggest that was the case.