David Weinberger writes:

There must be a mathematical way to express the Law of Conversational Overclocking: As the acceleration of conversation increases past the maximum speed of thought, the quality of conversation deteriorates.

In fact, isn't there a sweet spot, which varies by topic, medium, number of participants, and personality? Conversations improve as they approach a certain velocity, and then deteriorate rapidly, until they break the Unsound Barrier (where the laws of logic go through a singularity), at which point the conversation just is no more?