Clinton is considering a single plan: a battery of fixed, land-based ABMs in Alaska.

CENTERFORSECURITYPOLICY: Beware a Clinton Arms Deal

ABMs, in contrast, make no assumptions about the existence of efficient markets or general equilibrium.

ECONOMIST: Economics focus

That is because ABMs contain feedback mechanisms that can amplify small effects, such as the herding and panic that generate bubbles and crashes.

ECONOMIST: Economics focus