Comment by Atheb

From the article

  There is a lot of overlap here with the authoring process of a Word document. You don’t necessarily want the real-time coauthoring experience offered by Microsoft SharePoint or Google Docs., this can inhibit your ability to determine who is responsible for specific changes to content. Branching offers a much clearer audit trail of changes. Like with code, tags can be added to signify a minor or major version of a document is ready to be published.

While it's very cool, I'm shivering at the idea of teaching Git to non-technical people. And it still seems like a non-realtime version of Google Docs because Gdocs does offer audits