I'll tell you what would really change the world: forcing our legislatures to use version control when writing our laws.

No more sneaking in cryptic revisions in the middle of the night without anyone noticing! No more anonymous additions from lobbyists!

http://radar.oreilly.com/2008/11/change-gov-revision-control...

Unfortunately if teaching our designers and managers to use git is hard, the prospects of teaching our elected representatives to use it are very slim.