«Any city however small, is divided at least into two,
one the city of the poor, the other of the rich;
these are hostile to each other.» (#Plato, #Politeia, 370 BC) 

#Phyton2 script for computing the inequality measures described in #AmartyaSen's #OnEconomicInequality (#OEI). I added my own inequality measure to the big zoo of inequality measures. The "Plato index" is hidden in the script.

I wrote this hack many years ago and now would need quite some time to remember, what I did then.🙂

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Calling #Theil's #inequality measure an "#entropy" irritated Amartya Sen. From #AmartyaSen's "#OnEconomicInequality" (#OEI) I learned a lot about #InequalityMeasures. But entropy seems not do go down too well with him (1973) and his co-author #JamesEFoster (1997): When describing the "interesting" "#TheilEntropy" (chapter 2.11), Sen sees a contradiction between entropy being a measure of "#disorder" in #thermodynamics and entropy being a measure for "#equality".