I worked on air traffic control display prototypes using Smalltalk in the early 90s. Pretty much everything was done in C and Ada back then (at least in my comp

I worked on air traffic control display prototypes using Smalltalk in the early 90s. Pretty much everything was done in C and Ada back then (at least in my company), and the sheer productivity of the Smalltalk environment blew away everyone who came into contact with it. Years later, fell in love with Ruby because it was so clearly itself a love letter to Smalltalk ! The great tragedy of our craft is that, despite exponential improvements in other areas of computing, IMO nothing since has really come close.