[rey]

They are more accomplished than her, I can believe. Certainly my students are. I like the analogy of how a machine can be used to make a machine more exacting than itself. The same is true of teachers. Moreover, I tell everyone I instruct that I want them to do better than me. Come back and show me whether I did a good job and how I could have done better.

[Windflier]

I like the analogy of how a machine can be used to make a machine more exacting than itself. The same is true of teachers.

That's a very good way of putting it. Thanks.