Natural Language and Sub-Languages with Controlled Vocabularies
This chapter describe differences between natural languages and special-purpose languages, where certain words used to describe observed regularities and patterns, acquire over time specific meanings that differ from their ‘ordinary' meanings in the language. Folk taxonomies, encoded in languages of peoples who occupy narrow ecological niches, serve an existential need of encoding knowledge important for survival. While folk biology developed taxonomies based on the human sensory system, modern biology evolves by including observational data from molecular biology collected with modern bio-chemical tools – scientific ‘extensions' of the human sensory system. In contrast to general language, the controlled vocabulary in ‘specialist discourse', also referred to by linguists as ‘sublanguage' and ‘Language for Special Purposes' (LSP) allows specialists to communicate in precisely defined terms and to avoid ambiguity in discussing specific conceptual situations