"organizations which design systems ... are constrained to produce designs which are copies of the communication structures of these organizations" Conway’s Law:
Interactions were counted between two users when: • One user @mentions another in a pull request, issue, or commit comment • A user comments on another's pull request or issue Our internal social graph
Source of commits. The more commits come from pull requests, the more open the project process. Percentage of issue comments and commenters coming from the project community (i.e. users with no commit rights to the main repo) Dr. Georgios Gousios, GHTorrent