The world is full of “Well Known Facts” – Hitler was a vegetarian, Nelson sported an eyepatch and Vikings went into battle wearing fearsome horned helmets. It sometimes seems there’s no end to the things that everyone knows to be true, but which aren’t. Welcome to the world of Mythconceptions – here you’ll find over 50 examples of why everything you were told by your parents, learned at school or saw on telly is probably wrong