When I was teaching university in 1990, students would hand in handwritten assignments. It was a student demographic that tended to preclude personal ownership of word-processing equipment, and perhaps even a simple typewriter.Each submission was reasonably legible. The only problem was that every student had a different handwriting style, such that grading involved spending a bit of time learning to decode each style from each student. It was draining, because you had to devote effort to figuring out what the words were before you could get to the deeper ideas. So I photocopied a bit of every student's submission, made a collage, and taped it to my office door as an illustration of why I would prefer typed assignments from now on.