(It was nice to smile at that Haskel example again. I think there was a series of blogs doing similar in different languages :-)
There is another thread: Practical example of "Is Perl code maintainable" that has some comments on implicit use of @_ versus explicit. It also has people who know that their code will need to be maintained, advocating not writing their code as 'cleverly' as they can, to ease maintenance, which was the reason I added a quote in an earlier post to this thread.