Asked a user to log into a computer at work. She would have been around 25 or so about 6-7 years ago.

I was stunned watching her turn on caps lock each time she had to type a character in uppercase. I didn't understand it at all until my mom pointed out she probably always used a phone or a tablet and never learned what the shift key was for.

Still blows my mind because by that point in that user's education she had probably written hundreds if not thousands of papers to get where she was. I can't imagine her doing that without using the shift key.