Guy Claxton reflects on instruments of the devil, trolls and what happens when you challenge the media to think afresh

Could we live in a world without erasers?!

Well, who would have thought that the idea of banning erasers could cause so much kerfuffle! One afternoon I was rung up by the education editor of the Daily Telegraph to talk about Educating Ruby, and he asked for a simple, practical example of what I was talking about.

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