I do agree with you. Preaching the converted doesn&#x27;t require that much effort.<p>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 &quot;jargon&quot; when an example would have been so simple to understand.<p>After all, Mr Minsky was a teacher, certainly a mighty good one :)