That's a nice sentiment, but it doesn't really fit the case at hand. The multi-thousand line explanation is only necessary for people who don't know APL. Once

That's a nice sentiment, but it doesn't really fit the case at hand. The multi-thousand line explanation is only necessary for people who don't know APL. Once you are fluent in the language, a one-liner like the one shown requires very little explanation-- consider it the APL equivalent of the Ruby/Rails "blog in 10 minutes" demo (especially if you avail yourself of the 7 minute video I linked to elsewhere in this discussion.) Each glyph in APL represents a conceptual construct, so the language is quite expressive of programmer intent--much moreso than many other languages I've used.