Translated directly from Latin, “felix culpa” means “happy fault,” but it more loosely means that a mistake has an unintended positive outcome. The term was originally used in the Christian church to refer to Adam’s sin as being ultimately fortunate, but it has since taken on more secular usage. Perhaps it’s a felix culpa that you miss your train, for example, because then you don’t get caught in the stopped elevator at work. Or maybe the evening turns into a felix culpa when you burn dinner, because you end up seeing a friend while picking up pizza.