Researcher tests open source

One thing we find with respect to participation is that in a couple of other surveys, 60 percent of open-source software developers who show up as core contributors tend to be contributors to two to 10 other projects. Once you've established a reputation of expertise in a certain area, you can take that to another project, or conversely, people seek out your expertise, because you know how to do certain kinds of things. The overall dynamic that starts to emerge is that there's a social mechanism for the creation of critical mass that lets these projects coalesce and come together, so systems can grow and evolve at rates that far exceed what's predicted by good software practice. Software engineering predicts that projects grow by the inverse square law, meaning that initial growth is fast. It then slows down, and then, with a project shift, you get steady growth.