Aaron Hsu has a bunch of talks on YouTube that cover this. He argues that his compiler that translates APL to run on GPUs (or something like that), is much more coherent than the versions he wrote in scheme and other languages. It's easy for him to see at a macro level, what the code is doing. There's no need for boilerplate either. Pretty cool stuff.

Note that I'm not advocating that everyone should do APL for all uses. I adore Python and think it's awesome. I'm just saying these languages deserve more love than they get.