I think your explanation here omits the simple self regulating CONWIP method that XP teams have been applying implicitly for years.

Let me explain. Think of a team of independent intelligent agents, with each agent applying simple rules. One such rule is that you on,y work on one taks at a time,and that when complete you pull the highest priority task from the board either as a sing,eton or as a pair.

Applying this system results in a self organised CONWIP which is limited to the number of available pairs/agents.

The importance of such an approach is that it. Yields on the ideas of Complex Adaptive Systems. The team swarm the board, each applying simple rules, and a chorent system behaviour emerges as a consequence. Similar to the flocking of Boyds,

I thought it was worth explaining this since it is a common misunderstanding of how XP works. This flocking approach also has a Humber of advantages. The team will automatically adapt to change. Say less agents are available or tasks that do not require pairing begin to make up the bulk of the demand.The WIP limit varies automatically adapting to the available capacity and the varyng demand as needed.

Paul.