I can't see how anyone can seriously doubt the existence of the poltergeist phenomenon. Not only has it been extensively documented, but it is not all that uncommon. If you live in a low crime area, your house probably has a better chance of getting a poltergeist infestation than being burgled. And it's no fun at all - at least, not unless your idea of fun is having your sleep disturbed by "things that go bump in the night", and your meals disturbed by flying cutlery and smashing crockery, clocks running backwards, electrical appliances turning off and on, and mysterious objects appearing out of nowhere, and others disappearing into thin air. But at least they hardly ever hurt anybody. In one case the babies were regularly taken from their crib and gently placed on the floor, rather than being thrown. However, I suppose a low level poltergeist infestation might make life a little more interesting.