Originally Posted by
spinwing
... the command position was on the left side of the cockpit was because of provisions in those very famous "Rules of the Air".
<snip>therefore in order to continue to keep the other aircraft in safe sight the best place for ones bum was to be on the left hand side of the aircraft.
Howzat sound???

Ah spinwing, but surely that leads to another conundrum:
Which came first? The "driver on the left" or the "Rules of the Air"?
PS Sorry for calling you Shirley...