> But why those particular countries Because they had coherent archives of several proxies that Piketty uses for a long period of time. He opened the door to p

> But why those particular countries Because they had coherent archives of several proxies that Piketty uses for a long period of time. He opened the door to people doing the same work he did and contradicting him with other countries, but I would not bash him for not doing the same work on every country on the planet.