Maybe we could get him to take a look on the KonicaMinolta BizHub Cam.
It's pretty much an unenforceable rule, at least given the pros' apparent use of uncodified Kabuki gestures. Which is to say, they looked at each other, nodded, and Harman went first. Like watching pit trading at the old NY Merc. Also, it's a bit of a "how many angels can fit on the head of a pin" topic, but hey, somebody felt the need to stick the rule in the book, so...