By way of qualification...
the Viscount cockpit showed very little in the way of ergonomics.
Cramped,poor visibility,controls scattered and not grouped made for a high workload and the lighting was woeful.
It certainly was successful from a passenger point of view but the airconditioning was totally inadequate in warmer climates.
From a working enviornement (?) point of view the DC4/6 was far better.
Thats my view after 4 years on 720,747 and 816/832 types often all types in one duty period.
720...switches up for on. 747...switches down for on ! Go figure
