Via Indiewire, I found some other neat tidbits from his Cannes interviews:
Knowing all the different department's roles and how to perform each job is without a doubt a big help to someone who is "in charge of the ship" as it quickly will help you decide what might be possible and the best way to do certain things.
I've recently started Producing TV as a break from Editing and having been an editor has been a great asset in my new role as a producer. I can usually quickly determine if scenes will work based on the raw footage and can quickly determine what is worth working on. Furthermore, I can use my "editor brain" to come up with new scenes that weren't shot or preplanned. Being able to determine a realistic timeframe to edit a scene or make changes to a cut doesn't hurt either.
See the rest of the article for more fun tidbits.