This analysis seems a bit shallow and I'm not sure what point it's trying to prove. There are a lot of factors that aren't accounted for (as other commenters po

This analysis seems a bit shallow and I'm not sure what point it's trying to prove. There are a lot of factors that aren't accounted for (as other commenters point out, project size is a major one), and a few others I can think of that would affect the metric used (apparently bugs/repo): * Project management strategy for the repo/project. * Commercial vs. non-commercial project. * Ability and experience of the developers. * Popularity of the project. * Type of project (library, application, etc.) I suspect all of these will correlate in a meaningful way with the language choice. Commercially produced or consumed projects may be more likely to have comprehensive bug reporting/tracking, and are more likely to be in a "mainstream" language, for instance. Like Torvalds says, with enough eyeballs, all bugs are shallow. A corollary to that could be that without knowing how many eyeballs there are, and how well they can see, you don't really know how many bugs there are, either.