Chomsky that sentences of the type "Is the man who is hungry ordering dinner" are so rare that it is unlikely that children will have heard them. Since they can nonetheless produce them, it was further argued that the structure is not learned but acquired from an innate cognitive language component. Generative grammarians then took as their task to find out all about innate structures through introspection in order to form a picture of the hypothesised language faculty. Generative grammar promotes a modular view of the mind, considering language as an autonomous mind module. Thus, language is separated from mathematical logic to the extent that inference plays no role in language acquisition. The generative conception of human cognition is also influential in cognitive psychology and computer science. Cognitive Linguistics (linguistics framework) One of the approaches to cognitive linguistics is called Cognitive Linguistics, with capital initials, but it is also often spelled cognitive linguistics with all lowercase letters. This movement saw its beginning in early 1980s when George Lakoff's metaphor theory was united with Ronald Langacker's Cognitive Grammar, with subsequent models of Construction Grammar following from various authors. The union entails two different approaches to linguistic and cultural evolution: that of the conceptual metaphor, and the construction. Cognitive Linguistics defines itself in opposition to generative grammar, arguing that language functions in the brain according to general cognitive principles. Lakoff's and Langacker's ideas are applied across sciences. In addition to linguistics and translation theory, Cognitive Linguistics is influential in literary studies, education, sociology, musicology, computer science and theology. Conceptual metaphor theory According to American linguist George Lakoff, metaphors are not just figures of speech, but modes of thought. Lakoff hypothesises that principles of abstract reasoning may have evolved from visual thinking and mechanisms for representing spatial relations that are present in lower animals. Conceptualisation is regarded as being based on the embodiment of knowledge, building on physical experience of vision and motion. For example, the 'metaphor' of emotion builds on downward motion while the metaphor of reason builds on upward motion, as in saying “The discussion fell to the emotional level, but I raised it back up to the rational plane." It is argued that language does not form an independent cognitive function but fully relies on other cognitive skills which include perception, attention, motor skills, and visual and spatial processing. Same is said of various other cognitive phenomena such as the