 Consider, for example, the thought that blossoms are forming. On a representational theory of thought, this involves a representation of blossoms forming. A theory of mental content aims to tell us, among other things, why this representation has this content, and so why it is a thought about blossoms forming, rather than about the sun shining, pigs flying, or nothing at all. In general, a theory of mental content tries to explain why mental states, events or processes (or, assuming a representational theory of them, the mental representations involved) count as having the contents they have.