Oh, this interesting little thing I noticed just now: jodrellblank also mentioned "enclose bind grade_up index self_right" hours before me in https://news.ycombinator.com/item?id=28095934
And I had read that comment! It just didn't register at all when I read that comment; even though I read it word by word, I did not realize that he also wrote the sort train (until I read it again now and converted to symbols in my head). Yet I would have immediately recognized it had I seen it written as APL symbols.
Visual pattern matching can be strong. (It's what allows you to recognize and read words that you do not know how to spell correctly.)
And I had read that comment! It just didn't register at all when I read that comment; even though I read it word by word, I did not realize that he also wrote the sort train (until I read it again now and converted to symbols in my head). Yet I would have immediately recognized it had I seen it written as APL symbols.
Visual pattern matching can be strong. (It's what allows you to recognize and read words that you do not know how to spell correctly.)