Not as much as you think. Here is Charles Kenny’s closer:
In short, the last six years has not changed the basic conclusion that the growth literature has taught us much less about how to get rich than it has about who is already rich. There is nothing particularly new in recent growth theory, but perhaps that is no surprise because there is remarkably little new in growth, either – the rich today are by and large those who were rich yesterday. That there might not be a holy grail of growth policy, however, is no reason for people of economic faith to stop looking, so no doubt the next six years will see another 13,000 articles on the subject to review.