Why a wiki?

A wiki is digested ideas not a running gunfight.

It has topics and links between topics.

It records consensus. It provides a place to build up the ideas from many discussions into a coherent point of view that reflects the output from the discussion. If there are alternative views they should be documented separately as a coherent set of ideas. Dissenting ideas should be recorded and eventually eliminated as their support wanes or incorporated into the final result as possible alternative approaches that could be adopted if we ever get to a set of actionable tasks.