But the chapter marks a significant departure from the Freakonomists' modus operandi: it contains little in the way of economics, other than a brief discussion of externalities and the observation that the hose system would be much cheaper than building an entirely new low-carbon energy infrastructure for the world.
Though her chapter on the Galapagos islands deserves praise for bringing Darwin to life in deceptively simple language, it contains no mention of the row among fishing interests, travel promoters and conservationists that is now engulfing the islands.