Description
1. The abundance or variety of alternative control actions which a control mechanism is capable of executing must be at least equal to the abundance or variety of the spontaneous fluctuations which have to be corrected by the control mechanism, if the control mechanism is to perform its function effectively. Only a greater amount of variety in a regulator can control the variety present in a given system.
2. A mechanism's capacity as a regulator cannot exceed its capacity as a channel of communication. (This can be related to Shannon's Tenth Theorem which states that if noise appears in a message, the amount of noise that can be removed by a correction channel is limited to the amount of information that can be carried by that channel).