As was pointed out at the event itself this evening, there was a retrospective panel
on the 360 at a conference in the 70's. It's significance was understood long
ago.
I think 40 was just a convenient round number that coincided with CHM's interest
in such an event. The CHM in its current incarnation did not exist 8 years ago. The
museum is definitely eager to capture the recollections of industry pioneers who may
not be with us for too many more years.
--Bill