[aout]

I do agree with you. Preaching the converted doesn't require that much effort.

Now to nuance a bit this over-simplistic sentence I just written: do you think I am interested in mathematics teaching? I did read the article anyway so you might be right but I felt a bit overwhelmed by all this "jargon" when an example would have been so simple to understand.

After all, Mr Minsky was a teacher, certainly a mighty good one :)