13. A system for building an interface that receives and responds to varied natural language expressions, the system comprising: at least one hardware processor; and at least one executable module that, when executed by the at least one hardware processor, builds at least one data structure comprising a plurality of sets of data fields that contain a plurality of concept symbols, wherein the plurality of concept symbols comprise a plurality of elementary concept symbols, wherein each of the plurality of elementary concept symbols corresponds to a natural language element, and a plurality of compound concept symbols, wherein each of the plurality of compound concept symbols corresponds to a pair, wherein the pair comprises one of a first elementary concept symbol and a second elementary concept symbol, an elementary concept symbol and a compound concept symbol, or a first compound concept symbol and a second compound concept symbol, for each of one or more domains of knowledge, receives one or more standard natural language expressions that express concepts of the domain of knowledge, wherein a standard natural language expression comprises text or audio, and divides each standard natural language expression into language subsections, each of the language subsections comprising one or more language elements, wherein each language element comprises a word or punctuation mark and each language subsection expresses a sub-concept of a domain of knowledge.
13. A system for building an interface that receives and responds to varied natural language expressions, the system comprising: at least one hardware processor; and at least one executable module that, when executed by the at least one hardware processor, builds at least one data structure comprising a plurality of sets of data fields that contain a plurality of concept symbols, wherein the plurality of concept symbols comprise a plurality of elementary concept symbols, wherein each of the plurality of elementary concept symbols corresponds to a natural language element, and a plurality of compound concept symbols, wherein each of the plurality of compound concept symbols corresponds to a pair, wherein the pair comprises one of a first elementary concept symbol and a second elementary concept symbol, an elementary concept symbol and a compound concept symbol, or a first compound concept symbol and a second compound concept symbol, for each of one or more domains of knowledge, receives one or more standard natural language expressions that express concepts of the domain of knowledge, wherein a standard natural language expression comprises text or audio, and divides each standard natural language expression into language subsections, each of the language subsections comprising one or more language elements, wherein each language element comprises a word or punctuation mark and each language subsection expresses a sub-concept of a domain of knowledge. 14. The system of claim 13 , wherein the at least one data structure comprises one or more relational databases.