Why is everybody talking about Piketty?

by Ryan Cooper in The Week "The English translation of French economist Thomas Piketty's magnum opus Capital in the Twenty-First Century is finally out, and it's made an enormous splash (see reviews here, here, and here). It's a brilliant, surprisingly readable work that synthesizes a staggering amount of careful research to make the case that income inequality is no accident. Indeed, Piketty argues that it is a feature of capitalism itself — unless governments take action to rein in capitalism's excesses." 
It also links to some things that can be done and which are being done partly in many countries.