Conceptual analysis may reveal that terms like 'pleasure' refer to multiple distinct experiences (e.g., intellectual and sensual pleasure), undermining the claim that the good is truly singular.

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