Book: The Undercover Economist by Tim Harford

I started reading The Undercover Economist last year, and though it took me a while to get round to finishing, it largely didn’t disappoint. In it, economist and Financial Times columnist Tim Harford seeks to put economics in everyday context, explaining theories in straightforward terms and giving an eye-opening account of how various actors behave in the marketplace. My copy was actually an amended edition, re-published to respond to the financial crisis of 2008 (the original, published in 2005, instead focused more heavily on the Dotcom bubble).


In the opening chapters, Undercover Economist looks into importance of location and scarcity power. Harford also lifts the lid on how supermarkets and coffee chains have developed sophisticated ways of responding to the price sensitivity of different customers, ensuring that they can secure business from more sensitive customers while still giving more free-spending patrons the chance to pay more (which they reliably take). He points out that a basic shopping basket in different chains in practice varies little, for example - it’s the definition different clienteles have of “the essentials” that makes shopping in Waitrose appear pricier. Harford’s summary of Costa coffee’s price list on p.39 is also amusing from this angle:



However, Harford also points out how consumer pressure in some cases led to price-targeting practices to be dropped, once discovered (he cites Costa Coffee charging a mark-up on fair trade coffee, without passing the proceeds on to farmers or actually needing to cover higher costs). And throughout the book, Harford leaves you to wonder at the complexity and success of what markets can sometimes do with (relatively) minimal direction. On page 2, he recounts the story of a Soviet official in London asking who is in charge of making sure supplying bread to the population, remarking that “The question is comical, but the answer – nobody – is dizzying”. In the final chapter, ‘How China Grew Rich’, he looks at the failure of Maoist policies, and how starting with Deng Xiaoping, the introduction of market-style incentives into China’s agricultural and industrial systems led to the startling growth and greater prosperity we see there today (Harford’s take on the rise of China also complemented well what I read last year in Liam Byrne’s ‘Turning to Face the East’ – reviewed here).

Parts of the book remind us that there are limits to what economic theory alone can tell us about optimal outcomes, though. In chapter 5 (‘The Inside Story’), Harford looks into the “lemon” problem that plagues health insurance markets in the US, wherein costly enrolees push up the price of insurance for all, and thus discouraging healthier people from buying insurance in a spiral pattern. He then moves on to exploring what “keyhole economics” would tell us is the optimal way a country can finance healthcare. He makes short work of the US system, understandably pointing to its average outcomes, excessive costs and lack of universal coverage, and then cross-compares with the NHS (Harford correctly notes that the US government spends more as % of GDP directly covering a quarter of its population than Britain does on our free-at-the-point-of-use NHS and private healthcare combined). He then examines the drawbacks of the NHS, and while his observations are valid (a relative lack of patient choice, issues with waits, the presence of more hospitals in marginal seats, the inevitable need for a body like NICE to apportion scarce resources), his sensitive “keyhole”-based solution isn't an improvement.

Harford to proposes a system that “compels patients to pay for many of the costs, thus providing an incentive to inform themselves and make choices…but which leaves the most severe costs to the government or insurance”, citing Singapore’s mixed public-private system of Medical Savings Accounts and catastrophe insurance as an alternative to either public or private management (in the UK, this idea is a favourite of Thatcherites such as Dan Hannan, Douglas Carswell and the ASI and CPS think-tanks). But this is only superficially attractive as a ‘third way’ solution – in practice, Harford’s assertion that “most medical bills are not catastrophic” clashes with a weight of evidence showing that even nominal co-payments for healthcare can exacerbate inequality of access and ill-health among vulnerable groups, while failing to save money (this blog by a Singapore resident looks at the increasingly unaffordable costs the Singaporean model imposes on its residents, while this one notes how it’s mostly supply-side government regulations that have kept the system vaguely workable). His point that the NHS model has pitfalls and restricts choice is easy enough to articulate, but at least this example of “keyhole economics” fails to give us a better solution as to how we might deliver high quality care for all. However, Harford’s account of the world is nevertheless not doggedly pro-privatisation. He acknowledges that gradual liberalisation in China has been beneficial when compared to the “shock therapy” in Russia in the 1990s, and that in China (where many enterprises remain effectively state-run) it has been the presence of market incentives and “the world of truth”, rather than changes in ownership, that have perhaps been most pivotal to China’s economic miracle.

Finally, my edition of the book also included the first chapter of his 2011 book Adapt: Why Success Always Starts with Failure included, which I much appreciated and will consider reading. The book appears to lay out the case for far greater tolerance of “trial-and-error” approaches, especially in the high-pressure world of politics and public policy making.


All in all, Undercover Economist gives some interesting insights and plenty of background on both some of the most basic and large-scale economic dynamics in the world around us. Worth a read.

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