Is That a Metaethical Jump?

Bentham says that we have built in desires, and that's where morality comes from. But if we want to say something is desirable, the only way we know that is people actually desire it. The naturalistic fallacy means you can't state a bunch of descriptive claims - there is pain going on. There are no good or bad pleasure gims for calculating higher pleasures and lower pleasures. We should sometime read like some g e moore or somebody like that, who objects to this.