Is a network — whether a crowd or blockchain-based entity — going to replace the firm anytime soon? Not yet, argue Andrew McAfee and Erik Brynjolfsson in the new book Machine, Platform, Crowd. But that title is a bit misleading, because the real questions most companies and people wrestle with are more “machine vs. mind”, “platform vs. product”, and “crowd vs. core”. They’re really a set of dichotomies.