J is APL in ASCII. My first PC was a hand-me-down from a family member who had installed APL on it and put a bunch of stickers on the keyboard for typing all th

J is APL in ASCII. My first PC was a hand-me-down from a family member who had installed APL on it and put a bunch of stickers on the keyboard for typing all the strange characters. Where I work, we have some production code in another APL-family language, q, which is the main interface to kdb - a remarkably fast time-series database in a remarkably tiny binary, with a remarkably expensive price tag. I think APL and its kin disprove the "Blub Paradox." Here's a language that in certain aspects is far more powerful even than Lisp, and in others falls down on tasks that are trivially simple elsewhere. And that's fine. Horses for courses.