This is a fascinating set of YouTube videos with Steve Jobs demonstrating the NeXT computer software. You can see many ideas that were later incorporated into iOS and perhaps even hints of things still to come.
How different is “interpersonal” computing from social computing? Steve Jobs understood the power of groups back then. I’m sure he also understands that today. We could see some exciting things coming from Apple in this regard.
Note that sound is immediately out of sync in parts 3 and 4, but don’t let that stop you. Watch him kill fax machines in part 3!
Part 4 is remarkable in how NeXT built fundamental things into the OS so developers wouldn’t have to for their apps.
Did you catch the prices at the end? Fifteen grand for one, near eight grand for another? All based on 68040 CPUs!