 We’ll cut to the chase here: it makes most sense for error theorists to make their claim about some properly defined set of basic normative claims. This would be, more or less, those claims that attribute a normative property to an individual or set of individuals (construed broadly, to include institutions, governments, etc.). So, on the modified reading, error theorists claim that all basic normative claims are false. This will presumably take care of the broader issue, exemplified above, of logically complex claims: if they’re normative, they are not in the primary scope of error theory.