other examples of proposed linguistic universals in semantics include the idea that all languages possess words with the meaning '(biological) mother' and 'you (second person singular pronoun)' as well as statistical tendencies of meanings of basic color terms in relation to the number of color terms used by a respective language. For example, if a languages possesses only two terms for describing color, their respective meanings will be 'black' and 'white''' (or perhaps 'dark' and 'light'). If a language possesses more than two color terms, then the additional terms will follow trends related to the focal colors, which are determined by the physiology of how we perceive color rather than linguistics. Thus, if a language possesses three color terms, the third will mean 'red', and if a language possesses four color terms, the next will mean 'yellow' or 'green'. If there are five color terms, then both 'yellow' and 'green' are added, if six, then 'blue' is added, and so on. Counterarguments Nicolas Evans and Stephen C. Levinson are two linguists who have written against the existence of linguistic universals, making a particular mention towards issues with Chomsky's proposal for a Universal Grammar. They argue that across the 6,000-8,000 languages spoken around the world today, there are merely strong tendencies rather than universals at best. In their view, these arise primarily due to the fact that many languages are connected to one another through shared historical backgrounds or common lineage, such as group Romance languages in Europe that were all derived from ancient Latin, and therefore it can be expected that they share some core similarities. Evans and Levinson believe that linguists who have previously proposed or supported concepts associated with linguistic universals have done so "under the assumption that most languages are English-like in their structure" and only after analyzing a limited range of languages. They identify ethnocentrism, the idea "that most cognitive scientists, linguists included, speak only familiar European languages, all close cousins in structure," as a possible influence towards the various issues they identify in the assertions made on linguistic universals. With regards to Chomsky's universal grammar, these linguists claim that the explanation of the structure and rules applied to UG are either false due to a lack of detail into the various constructions use when creating or interpreting a grammatical sentence, or that the theory is unfalsifiable due to the vague and oversimplified assertions made by