If one thinks about the issue of causes and coincidences, it brings to light a seemingly paradoxical result of the Humean regularity theory. It will be easier for an accidental constant conjunction to occur the fewer instances it has. If A occurs only five times in the history of the world, and is followed by B on each such occasion, then it counts as an exceptionless regularity. But it seems quite possible, given the few instances, that it could be a mere coincidence that the Humean mistakes for a cause.
