I for one couldn't agree more with everything that Bob says. However, I'm not convinced side-by-side seating is necessary or even a good thing for people who will be mainly flying in line seating singles. I'm trying hard to be convinced, I want to be convinced, because everything else about the Aurora concept is awesome. I've instructed in both types and admittedly communication is an issue in tandems. If designing and building a tandem cockpit is cheaper and easier, I'd say address communication issues with a nice lightweight intercom. Whatever the case, I applaud Bob's efforts with Aurora and his well-informed sound practical thinking.