If either group reads evidence that contradicts their position, it threatens to prick the bubble of their illusions. The same goes for all of us on innumerable topics. For example, when the publics of several developed nations were surveyed, homophobes tended to see homosexuality as a choice and the result of upbringing, whereas homosexuals and their supporters saw it as a genetically inherited preference. Believing in genes removes any possibility of ‘blame’ falling on parents.