About diffs, that is true, but my VCS does not use diffs. And I am aware of the combination problem, and there will be the option to lock things. But when it

About diffs, that is true, but my VCS does not use diffs. And I am aware of the combination problem, and there will be the option to lock things. But when it comes to visual things, someone does have to stare at it. If you watch https://youtube.com/watch?v=iZre2MUyvoQ https://youtube.com/watch?v=iZre2MUyvoQ , the thing you should notice is that John Lasseter is constantly checking the integration of separate parts. A director might tell a modeler and a designer to work on the same scene at the same time, as you said. In that case, I kinda expect the director to check the integration. Binary files are harder because there is no integration test, yes. But integration tests don't catch everything in code either, and people still want automatic merges.