I would like to know if you can tell me, what are economical theories that are in support of this kind of social system if any? Can this system be efficient?

  • $\begingroup$ This is off-topic here on Skeptics, but might be well-received on Politics or Economics. $\endgroup$ – Dan Bron Apr 17 '16 at 15:31
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    $\begingroup$ Check out this paper: public.econ.duke.edu/~erw/197/forget-cea%20(2).pdf $\endgroup$ – 123 Apr 17 '16 at 17:54
  • $\begingroup$ Freakonomics (or was it NPR Money podcast?) recently ran an issue on the topic, referencing some research $\endgroup$ – DVK Apr 19 '16 at 16:38