Different opinions about the oath of testimony on monetary matters and monetary matters only. Note the example of camels and their propensity to bump into each other and even kill other animals, apparently during the mating process. Plus, the question of the degree to which circumstantial evidence would be accepted. Also, the question of liability for a false oath - in monetary claims. And Rabbi Shimon was mocked in the land of Israel - for his view that a case of false oath regarding a deposit (pikadon) can inform the case of an intentional false oath.