“Say you were trying to find instances of when Bill Gates testified between May 15 and June 1. Using existing tools like full-text search engines, natural language query or speech recognition, you’d have to transcribe the audio into a text file, then index it with a lexicon of terms that included ‘Gates.’ Such an undertaking would have been labor-intensive, time-consuming, and error-prone. But only then could congressmen quickly locate testimony in which they were interested.|The key to expediting the process was eliminating the need for transcription or indexing or both.” John Harney —The Grammar of Sound Technology Review)