Particular individuals do not recur, but their building blocks do.

The multiplier effect is a major feature of networks and flows. It arises regardless of the particular nature of the resource, be it goods, money, or messages.

With theory, we can separate fundamental characteristics from fascinating idiosyncrasies and incidental features. Theory supplies landmarks and guideposts, and we begin to know what to observe and where to act.

When a new building block is discovered, the result is usually a range of innovations.

The measure of performance of any given agent is the amount of money it accumulates through its actions.

If there is to be a competition, there must be some basis for resolving it. It is also clear that the competition should be experienced based.

Particular individuals do not recur, but their building blocks do.