No!! There were no classes hundreds of thousands of years ago! There are no classes for women in developing countries! Women have given birth without classes, books, drugs and even doctors for millennia. They had other women to support them and no preconceived notions about birth. We just did it. Classes are just trying to undo all the damage 'man' doctors, medicine etc have done to womens trust in birth and self belief. The sooner we start to trust nature and the perfect design of a woman's body again, the better!!