👉 Non-unification, also known as a "non-union" or "unification", is a concept in computer science and linguistics that refers to the situation where two or more languages do not share a common base structure. The term was introduced by the American linguist David M. MacPherson in his 1964 book "The Language of Computer Science". In this sense, non-unification occurs when two or more languages cannot be unified into one, as they have different gramm
