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Language complexity

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Language complexity is a major topic within the field of linguistics. It explores how complicated the systems of human speech and meaning can become. Experts divide this study into several specific sub-topics. These include phonological complexity, which involves sounds, and morphological complexity, which involves word structures. They also study syntactic complexity, which concerns sentence patterns, and semantic complexity, which deals with meaning. Understanding these layers helps researchers track how languages evolve over time. While it is a vital area of study, it has been researched less than many other traditional linguistic fields.

To understand how complexity is measured, we must look at the specific mechanics of a language. Researchers often characterize complexity by the number and variety of its elements. They also look at how those elements relate to one another in a structure. One way to measure this is through syntagmatic complexity. This looks at the number of parts in a sequence, such as word length in phonemes or syllables. Another way is paradigmatic complexity, which measures the variety of parts. This includes the size of a phoneme inventory or the number of distinctions in a grammatical category, like aspect.

There are even deeper levels of organization to consider when analyzing a language. Organizational complexity examines how components are arranged. This includes looking at phonotactic restrictions and different types of word orders. Scientists also study hierarchic complexity. This involves looking at recursion and lexical–semantic hierarchies. Because comparing whole natural languages is a daunting task, researchers often focus on smaller parts. Phonology and morphology are two areas where these detailed comparisons are most commonly made.

Ideas about language complexity have changed significantly throughout history. During the 19th century, many people believed in differential complexity. They assumed that classical languages like Latin, Ancient Greek, and Sanskrit were naturally superior. They believed rising European languages needed to become more complex to support advanced civilizations. At the same time, many labeled other languages as "primitive" to imply they were simple. However, Friedrich Schlegel noted an important exception. He observed that languages like Basque, Sámi, and some native American languages possessed a striking degree of elaborateness.

In the 20th century, a new perspective emerged called the equal complexity hypothesis. Linguists and anthropologists began to reject nationalist ideas about the superiority of certain languages. In 1954, Rulon S. Wells III recorded an idea from Charles F. Hockett stating that all languages are equally complex. This view became the official standard in many academic contexts. Even though some people still viewed certain languages as simple, the scientific community moved away from those labels. For example, the 1971 Guinness Book of World Records incorrectly called Saramaccan a creole language the "world's least complex language." This claim lacked serious evidence, so it was removed from later editions.

Some researchers once proposed a "compensation hypothesis" to explain why some languages seemed simpler. They suggested that if a language was simple in one area, it would be complex in another to balance it out. However, the creolist John McWhorter argued against this in 2001. He argued it would be absurd if languages had a mechanism to calibrate themselves against the other 6,000 languages in the world. McWhorter suggested that creole languages are indeed structurally simpler than most older languages. He believes this is not a problem because simple structures convey logical meanings very clearly.

McWhorter noted that increased complexity often comes from features that do not necessarily improve a language's usefulness. He cited examples like grammatical gender or inalienable possessive marking. Other examples include switch-reference marking and syntactic asymmetries between different types of clauses. While his ideas about language contact have been debated, they have sparked much research. Today, linguists use various metrics to study these patterns. These include concepts like entropy, information, connectivity, and syntactic depth. Even though there is no universal consensus, researchers continue to use computational tools and workshops to solve these puzzles.

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