- Efficient: from prototype to deployment, it's a matter of days. The choice of styles let people use paradigms they are familiar with, meaning they do things quickly.

- Cheap: it does not cost much to hire someone to write perl. If they don't know how yet, the choice in style let them be efficient quickly. The code to be deployed is very lightweight, both in CPU and RAM usage.

- Stable: no API break. No new module that reinvent the wheel and breaks your codebase. Unit testing is about everywhere in cpan. Code written 20 years ago still run fine.