Two and a half millennia ago, Socrates complained that writing would harm students. With a way to store ideas permanently and externally, they would no longer need to memorise. It is tempting to dismiss him as an old man complaining about change. Socrates did not have a stack of peer-reviewed science to make his case about the usefulness of learning concepts by heart.
Today a different debate is raging about the dangers of another technology—computers—and the typing people do on them. As primary-school pupils and phd hopefuls return for a new school year in the northern hemisphere, many will do so with a greater-than-ever reliance on computers to take notes and write papers. Some parents of younger students are dismayed that their children are not just encouraged but required to tote laptops to class. University professors complain of rampant distraction in classrooms, with students reading and messaging instead of listening to lectures