Much of of the world of horsemanship is a world of make believe.  Horse trainers, clinics, books, and the Internet generate these myths, repeat them, and work to make them true.  But repetition doesn’t change things.  Facts are stubborn.   Here are some of the things I learned when writing “Horse Science, Horse Sense”: There is a movement promoting imprinting in foals. Early learning is a good thing. But a careful reading shows no evidence of filial imprinting of anything at any age in any mammal. Period. Human babies don’t imprint. Foals don’t imprint. The most aggressive horses in a herd are not leaders, because they have no followers. Horses don’t like bullies, and horses of lower rank will be found grazing with each other,…