[plagiarist]

What sort of definition of efficiency are you operating with? A system is not efficient if billions of dollars are "evaporating" out of the system.

Yes, the participants of those markets are various degrees of willingness. No, I do not agree that makes them efficient.

[mindslight]

Computational complexity theorists hate this one simple trick! NP hard is a lie! You just have to assert that a given problem has been optimally computed. We all know that physics obeys the whims of politics. </s>

It's especially ironic because if markets actually worked the way the "free market" dogma supposes they do, central planning would also work.