In talking to friends the last couple of days about the death of Steve Jobs, one common thread is that 12/8/80 seems to be the closest analogue because, for those of us born in the 50s, and probably for lots of others as well, Lennon and Jobs both held out the promise of a better future, and the ability of all of us to excel and change the world if only we follow our hearts and passions.
And after each of them left, the future seemed a bit less promising. All the music never to be created or heard; all the wonderful human extenders never to be designed and used.
And less good in the world. The community of humans with a bit less commonality, a bit less shared experience, a bit less yes.