I do have a minor ongoing concern that people coming from other languages lately latch onto the "for" family of forms from the start, don't get enough exposure to named-"let", and/or mutually/self-recursive procedures, and then end up shoehorning problems into the "for" forms (with flag variables and redundant checks and such). "break" and "continue" can be good shoehorns.
I still half-seriously like the idea of having unlockable language feature achievements, like unlockable equipment in video games. I might play with that idea soon.
Neil V.
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