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Interesting conclusion on his research: Presenting students' common misconceptions in a video alongside the scientific concepts has been shown to increase learning by increasing the amount of mental effort students expend while watching it.

"Shortly after the invention of the quantum computer chip, and the laying of fibre optic broadband to almost every house in the UK, it had been clear that the days of teaching as a profession were numbered. Teaching had been relegated to a minority profession in a matter of years. It had been simply a question of scale. A teacher, working for 45 years, could teach maybe 1,500 children. Some lessons would be better than others, some children would get more attention and do better than others, they'd occasionally need time off and so on. Simply put, human teachers were inconsistent, and not always great. So when the new educational bodies started recording the best lectures for every subject from around in the world, annotating them in 3D, and enhancing them with CG, what could the schools do to fight back?"

That's neat. Time for professors to update their resumes?