"In theory. I rather doubt that it’s practical. Bell Labs has a system that works by breaking the waveform down into several bands. . ." and then Alan is off on the subject of telephone companies. He delivers a complete dissertation on the subject of information theory as applied to the human voice, and how that governs the way telephone systems work. It is a good thing that Turing has such a large subject on which to expound, for the woods are large, and it has become increasingly obvious to Lawrence that his friend has no idea where the silver bars are buried.