Among the selection criteria for the new polyurethane were that the material exhibited a combination of good wear characteristics and mechanical properties, was easy to handle, and provided for fast, easy alteration and repair of polyurethane as well as metal patterns.
A linguistic universal is a pattern that occurs systematically across natural languages, potentially true for all of them. For example, All languages have nouns and verbs, or If a language is spoken, it has consonants and vowels.
Noam Chomsky, professor of linguistics at MIT, has developed the universal grammar theory of language development. Chomsky's theory proposes that the human brain contains a predefined mechanism (universal grammar) that is the basis for the acquisition of all language.oam Chomsky, professor of linguistics at MIT, has developed the universal grammar theory of language development. Chomsky's theory proposes that the human brain contains a predefined mechanism (universal grammar) that is the basis for the acquisition of all language.