[a3n]

> Tools and environment were another matter, getting MIT Scheme installed and running was a bit of a pain. Next time I'll probably try with Racket and Neil van Dyke's SICP support package

I followed along with the video lecture in Racket using van Dyke's SICP package, and it went just fine. For all practical purposes I don't know scheme.

It was nice trying to run the sqrt procedure that I had built up, be told that the 'average' procedure was not defined, quickly define it and successfully run sqrt. Such a simple thing, but ... it just worked.

Interesting seeing fractional results displayed as actual fractions.

I think it's very helpful, having programmed for >25 years, that I knew where the lecture was heading. Nevertheless, it was a wow experience. I wish I'd been exposed to this in my early years.