This rings very true to me too, as our entire application is written in Perl. As much as I do like the language, the lack of just about any static guarantees me

This rings very true to me too, as our entire application is written in Perl. As much as I do like the language, the lack of just about any static guarantees mean we regress an awful lot. Yes, we have unit tests, but until we have 100% coverage we have gaps for regressions that a compiler could have picked up.