Albert Einstein made mistakes, as did Galileo, Newton, Aristotle, Freud and just about every genius in the history of mankind. It shows that Pep Guardiola is in exalted company when it comes to ‘dropping a bollock’ every now and then. The only way to avoid mistakes is to regurgitate knowledge that has already been tested – even then you run the risk of repeating past errors – falling into Einstein’s definition of insanity, that of ‘doing the same thing over and over again and expecting differen

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