The Redundancy of a Channel

We vary the amount of redundancy in order to help our listeners. There's something called the, something like constant information rate. It's not just across languages, but even as they're saying more informative things, they slow down. When they're saying less informativeThings, they speed up. So within one language, within one speaker, within one conversation, they're adapting to how informative what they're saying is so that the listener has a fairly even ride.