This is an interesting article about how the many banks that are now merged into Wells Fargo prepared for the Y2K, and how after all that preparation, the Y2K was quite a non-event.
20191206/https://stories.wf.com/averting-y2k-crisis-years-preparation/
This is a curiously accurate prediction of the smartphone by an AT&T executive of the 1950s.
20191206/https://kottke.org/19/11/att-exec-predicted-the-smartphone-in-1953