Seems perfectly sound to me. redditers will have to find something new (possibly - or even probably - artificial) thing to rag on, I guess. Again, I'm not sure why, but it seems to be a favorite activity of online communities to try to criticize anything they can. It feels like there should be an official term for this phenomenon (that is, other than "trolling"; more like WHY it happens), but alas my research fails me. Help, anyone?

As an aside about Arc, but not to harass you:

If you don't mind my asking of silly questions, I have noticed that in provided snippets the syntax you seem to make use of the most is the [_] notation even though you had some additional ideas kicking around originally (e.g., x:y for (x 'y), allowing infix math, letting users define syntax). Are you still planning to include / already have these (and possibly more) syntactical forms? What of parentheses inference (not as a matter of hating parens, but just as something included in your initial writings that hasn't seemed to surface in code snippets)? Any new thoughts about such things?