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
  • 1
    $\begingroup$ 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