 This is Dummett’s argument from the Manifestation Criterion: there must be some way for language learners to become able to use terms of language (in the first instance, learn the terms expressing the logical notions)—there must be some criterion that is manifest in their (language-learning) experience. Dummett claims this is where classical semantic theories fail: there is no way, short of an all-embracing meaning holism for them to do so, since there is no access to an independent semantic realm apart from language itself.