Q: As a native of Zambia with advanced degrees in public policy and economics from Harvard and Oxford, you are about to publish an attack on Western aid to Africa and its recent glamorization by celebrities. ‘‘Dead Aid,’’ as your book is called, is particularly hard on rock stars. Have you met Bono? A: I have, yes, at the World Economic Forum in Davos, Switzerland, last year. It was at a party to raise money for Africans, and there were no Africans in the room, except for me. Q: What do you think of him? A: I’ll make a general...