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[[eo:Loglano]]
Beginning about [[1955]], Dr. [[James Cooke Brown]] began work on '''Loglan''', ana [[constructed language]] designed for linguistic research, particularly investigation of the [[Sapir-Whorf hypothesis]]. He intended it to be as culturally neutral as possible, different from any existing human language (even other artificial ones), and totally regular and unambiguous. The language's grammar is based on predicate logic (the name is short for "logical language"), which also makes it particularly suitable for human-computer communication, an application that led [[Robert Heinlein]] to mention the language in his novel ''[[The Moon is a Harsh Mistress]]''.
 
The object was to make a language so powerfully expressive for logic and calculation that people learning it would become measurably smarter if the hypothesis was true.
 
He intended it to be as culturally neutral as possible, logically and linguistically powerful, incorporating all known expressive features of any language (e.g. compounded ___location tenses), metaphysically parsimonious (e.g. you are note required to express any feature of reality, as you are in English time-tenses of verbs), and totally regular and unambiguous. He even used maximally stable phonemes.
 
The formal grammar was disambiguated mechanically (a first).
 
The language's grammar is based on predicate logic (the name is short for "logical language"), which also makes it particularly suitable for human-computer communication, an application that led [[Robert Heinlein]] to mention the language in his novel ''[[The Moon is a Harsh Mistress]]''.
 
He founded [[The Loglan Institute]] to develop the language and other applications of it. Dr. Brown always considered the language a research project that was never complete, so although he released many papers about its design he never "released" it to become a usable language. A group of his followers later formed [[The Logical Language Group]] to create the language [[Lojban]] along the same principles, but with the intention to make it freely available and encourage its use as a real language. This latter group has a small but active community of speakers.
 
Loglan is very strange, because one can say things that are simply not meaningful. In natural languages, the ambiguity of the grammar hides these odd meanings.
 
For example, you can literally say that john, a person, is a short word. Or one can directly and precisely say any of the 22 different meanings of the English phrase "a pretty little girls school." This feature is so pronounced that people fluent in Loglan say impossible things as a sort of joke- a type of humour simply not supported by the linguistic machinery of other languages.
 
The oddest, most difficult thing for a speaker of an Indo-european language like English is that Loglan has no nouns or verbs, objects, direct objects, indirect objects or possessive forms. There are only predicates, with places to place variables: e.g. botso: X buys Y from P for price Q. There are prefixes to reorder predicates, for example, price would be botso with a little word to make price the first variable. Tenses for time, ___location, actor, type of action, etc. are provided by "little words" which are optional. Every language feature has standard, regular forms for acting in compounds. For example, time-travel tenses are possible trvially in Loglan (I did X from time Y to P in time Q.) using compounding forms normally used for ___location tenses.
 
The language is designed so that the patterns of phonemes always parse into words. Thus, one cannot mumble Loglan, because even when run together, the langyage is still parsable.
 
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