I have been telling this story to UX designers since I first read it. Fun to see it pop up again, it's one of my favorites.

My favorite part of UX is getting to go on site to see people's workflows in action. An example that comes to mind was working on an early iPad app for EMS / first responders. They already had toughbook-style computers in the ambulances, but had lots of complaints. One thing we noticed immediately was that they couldn't use the computers when they were wearing latex gloves. They actually tracked vital signs by writing them on the gloves themselves and attempting to transcribe them when they got back to the computer.