I remember in the 70s, I was a kid, and my friend's mom was an engineer, and she was working on her PhD. And as part of that, she was writing a program in FORTRAN to calculate the curvature of a railroad track.

We went to the computing center at the university with her. She had a deck of punch cards. And in those days, you'd give your deck to someone at a desk. Then in a couple of hours, they'd give you back a printout of what your program had done.

One time she dropped her deck, and it just scattered on the floor. I think she had a lot going on, but that put her over the line, she broke down and cried and cried.