A housemate of mine was in grad school when I was an undergrad in the 1980's. He was a child prodigy and had ended up in Comp Sci years before we met. He has me

A housemate of mine was in grad school when I was an undergrad in the 1980's. He was a child prodigy and had ended up in Comp Sci years before we met. He has memories as a TA, where his students would get frustrated with their program not running, so they'd shuffle their stacks of punch cards and reinsert them in the reader. That was just a way of blowing off steam. By that time, the IBM card readers had an auto-sort feature.