At 10:33 PM -0400 5/30/01, Haim wrote: >Dear Friends, > > As with the discussion on long division, some months ago, I find >the longer the discussion goes on, the less I understand. > > I always understood the two column proof to be a pedagogical >device, much like training wheels on a bicycle. Some children need >training wheels longer than others, a few children don't need them at >all, most children benefit from having them for some period of time >early in their bicycle riding experience. > > Is someone asserting something else about the two column proof?
When the pedagogical device become the goal in itself, as is the case with two-column proofs and a few other arcane topics, it's the school equivalent of going 90 mph in 1st gear--you might pull it off once and for a short period of time, but you will burn the transmission and the engine.
Wayne channelling for Barry Simon is certainly asserting something quite different from what you describe--just look at his complaint against Lou Talman.