By contrast, naturalist views do face a particular difficulty in giving an account of a value that is genuinely unitary. On the goods approach, for example, the claim must be that there is one good that is genuinely singular, not a composite of other goods. So for example, a monist hedonist must claim that pleasure really is just one thing. Pleasure is a concept we use to refer to something we take to be in the natural world, and conceptual analysis may or may not confirm that pleasure really i