In bygone times there were three of us up front. When the third pilot/ flight engineer was no longer present the one thing most noticeably missing was the formality. Funny thing is, with the extra set of eyes it somehow gave the performance that little bit of an edge that comes with having an audience and not just an associate. Like a little trio of chamber music. Really hard to describe or imagine. You had to be there. Maybe you can see how this relates to a camera in the cockpit. Or maybe not.