Loglan based on predicate logic
Goals
Loglan (an abbreviation for "logical language") was created to investigate whether people speaking a "logical language" would in some way think more logically, as the Sapir–Whorf hypothesis might predict. The language's grammar is based on predicate logic. The grammar was intended to be small enough to be teachable and manageable, yet complex enough to allow people to think and converse in the language.
Brown intended Loglan to be as culturally neutral as possible and metaphysically parsimonious, which means that obligatory categories are kept to a minimum. An example of an obligatory category in English is the time-tense of verbs, as it is impossible to express a finite verb without also expressing a tense.
Brown also intended the language to be completely regular and unambiguous. Each sentence can be parsed in only one way. Furthermore, the syllabic structure of words was designed so that a sequence of syllables can be separated into words in only one way, even if the word separation is not clear from pauses in speech. It has a small number of phonemes, so that regional "accents" are less likely to produce unintelligible speech. To make the vocabulary easier to learn, words were constructed to have elements in common with related words in the world's eight most widely spoken languages.
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