This led some of Chomsky's early students to the idea of 'generative semantics'—the proposal that the speaker generates word and sentence meanings by combining irreducible constituent elements of meaning, each of which can be switched 'on' or 'off'. To produce 'bachelor', using this logic, the relevant component of the brain must switch 'animate', 'human' and 'male' to the 'on' (+) position while keeping 'married' switched 'off' (-). The underlying assumption here is that the requisite conceptual primitives—irreducible notions such as 'animate', 'male', 'human', 'married' and so forth—are genetically determined internal components of the human language organ.