When Dambisa Moyo wrote a book claiming that aid was bad for Africa, many in the West were ecstatic. This was no right-wing, isolationist, middle-aged, white, male author, but a glamorous, young, black, female, African economist. Dead Aid won itself a load of publicity when it came out in 2009, not because its argument was particularly new, but because it came from such an unexpected source.David Levenson / Getty ImagesMoyo’s new book, How the West Was Lost: Fifty Years of Economic Folly&m...