On the subject of style, Mr Bellos explains how it came to mean something other than the indispensable attributes of a gentleman and how literary style became contained within the structureof a sentence.
In an English-language class, Mohammad Bakhtiari stood in front of his pupils and discussed the architecture of the language: sentencestructure, the formation of paragraphs, the conjugation of verbs.
The system can respond to the thousands of different ways in which a request might be expressed, taking into account diverse phrasing, sentencestructure and regional accents.