in reply to The Center of PerlMonk Mass

My first impression is that I think it should consider the mass of the monk, rather than each as a unit.

However, I like the idea of using levels as weights (pun intended) too. This would reflect better the business aspects of where to find Perl talent.

Looking at the map, it seems that the distribution is bimodal. Perhaps you should show two distinct centers, one for each "atom"?