This reminds me of somewhere around 1998. I was on-site technician for a market-data software company that had was complimentary (live charting) to Bloomberg terminals. That year, we were updating our software from DOS to Windows NT. I spent a LOT more time than I ever imagined I would teaching men two to three times my age how to use a mouse. Many did not enjoy the change and most were quite adamant about saying so colorfully.

Those guys could run circles around me in the DOS version with just a keyboard. Seeing them use it now reminds me of watching someone with a decade+ experience with vim or emacs.