Perl [lets] you express a lot of operations in a few characters. Syntactically succinct, hard to read.
That really depends on your experience level, like in anything. Reading a wiring diagram is arcane to the uninitiated, but once you know what symbols represent what types of circuit pieces (including resistors, capacitors, diodes, FETs, etc.), they are both syntactically succinct and easy to read because you can tell what goes where at a glance, you don't need to read and parse a lot of text.
Same thing in Perl. Once you actually learn it, it becomes easier and faster to read than, say, Java, because there's less skipping over of absolute boilerplate. The more I use perl, the less patience I have for trying to find my way through the verbosity that is Java.