Understanding creepiness

From Aeon: "When we encounter something familiar, we immediately categorise it as such-and-such a kind of thing. When we encounter something novel, we often slot it into a pre-existing category. But there are occasions when we encounter things that resist categorisation. They seem to belong to two or more mutually exclusive categories. In such circumstances, we are suspended between alternatives. We don't know what to make of the thing, because it violates our established conceptual norms. When this occurs it elicits a distinctive and disturbing feeling – the feeling of creepiness."