https://www.vice.com/en_us/article/n7jdgw/larry-tesler-the-inventor-of-copy-paste-was-more-influential-than-you-realize

Larry Tesler perhaps wasn’t the most high-profile figure in tech history, but his impact is most certainly felt in ways big and small to this day.

By far, his best known contribution is the cut/copy-paste functionality that he is widely credited with inventing.