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A Cannan Hits the Mark

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2004   "A Cannan Hits the Mark."   In Andelson, Robert (ed.), Critics of Henry George, Second Edition, Vol. II, pp.435-50.   Oxford: Blackwell Publishing. Simultaneously published in AJES 63(2):273-90, April

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A Cannan Hits the Mark

By Mason Gaffney

Edwin Cannan (1861-1935) is best known for his 1904 edition of The Wealth of Nations, which became a standard.   His other best-known work is a History of Theories of Production and Distribution, 1893.   His book most relevant here is History of Local Rates in England, 1896.   He was a professor at the London School of Economics, 1907-26, although a large inherited fortune let him live and rub elbows at Oxford, which he seemed to prefer.   His later work was less noteworthy.   He criticized both Marshall and J.M. Keynes, but without much impact.

Cannan's Law

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In 1907 Cannan fired off a round at local rating of site values. [i]   It hit home.   First he recited the logic of what today we call the "tragedy of the commons" (it was common coin long before Garrett Hardin).   Then he pointed out that a city taxing only site values to provide free public services would attract too many people and too much capital. [ii]   A city is an "open economy," free to immigration of everything but land, something like an open range or fishery.    Even if all cities tax only site values, cities with more rents per head may support public services at higher levels, and so attract immigrants.   This distorts locational decisions, attracting people to jobs of lesser productivity where they may gain from better public services.   This is "Cannan's Law."

There are three bad results from Cannan's Law.   One is an uneconomical distribution of population, as cities with more rentable lands attract more of mobile labor and capital than they should.   That is not to deny that people are attracted to New York for good economic reasons.   Rather, it is that distributing economic rent freely to all comers attracts people above and beyond the good economic reasons.   Thus, people move to New York to earn high wages, well and good; but in addition they may receive a high quality college education from CCNY, the "poor man's Harvard," paid from local property taxes. In the glory days of the Mesabi iron range, children of immigrant Finnish miners there in Hibbing, Minnesota, enjoyed some of the best schooling in the country, paid from local property taxes on iron ore.   In Alaska and Alberta, workers receive high wages to overcome the harsh climate, remote locations, and other disamenities.   That is economically sound, but in addition they get a cash dividend each year from the overflowing oil revenues.   All that tends to draw more people, like flies swarming to fresh pie, than the wages warrant.

A second bad result is what economists call "dissipation of economic rent."   To make it simple, consider a rich but crowded fishery where another fishing boat added to the crowd will not raise the total catch at all, but simply take fish from other crews who were already there.   Interlopers will keep entering until the average boat and crew just make costs, leaving no net rent for anyone.   This has long been standard economic lore.   As Cannan writes, if a locality uses its rents to benefit all its "inhabitants," people will flock to the richest places until there is no further gain to immigrants because they have wiped out all the rent. [iii]

A third bad result of Cannan's Law is to lower the incentive of local governments to provide public services that are open to all comers.   It fosters local institutions and attitudes that are harshly hostile to newcomers and outsiders, especially to the poor, young, homeless, hungry, and vagrant.   As Woody Guthrie, the Okie bard, sang of California, "Believe it or not, you won't find it so hot, if you ain't got that do-re-mi."   That was in 1935, the year Cannan died; it remains true, only moreso.

              Cannan goes on to say that if we are to tax site values, the tax should be national.   It is not clear how sincere he is - his style is carping, condescending, elitist and unsympathetic.   Still, his logic implies it, and he does say it, however grudgingly [iv] .   On this point the great Alfred Marshall agreed, in a positive spirit (positive, that is, for Marshall, a famously "two-handed" economist). [v]

Why Heed Cannan?


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              It would be easy to dismiss Cannan, a careless writer.   One could pick at his many flaws, but it would be tedious and petty.   He lacked much standing in the profession, except as a hanger-on.   He is best known for editing The Wealth of Nations, the work of another man's genius.   Marshall credits Cannan as one of many who have helped him on "special points," [vi] yet Cannan misquotes and misrenders Marshall so badly one doubts if he ever finished reading Marshall's Principles, with its emphasis on the distinctive qualities of land, and its virtues as a tax base. [vii]

            Yet it would be wrong to dismiss Cannan without heeding the crash of his siege-gun, for he aimed it well.   His point is that if we are to think globally we must also act globally, or at least nationally, not just locally.   Those who follow the behest to "Think globally, act locally" trap themselves in an anomaly, dooming them to the fate of Sisyphus.   No locality has much incentive to share its land, unilaterally, with the rest of the world's mobile people.

Alfred Marshall seconds Cannan's point, although he notes that the "well-to-do" tend to move to the suburbs, leaving the "working classes" in central cities. [viii]   He rather misses Cannan's point that the "London Dukes" who owned (and still own) the best of central London are the target of land taxers.   At this point Marshall minimizes the problem - his world tends to be the best of all possible ones.

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Mason Gaffney first read Henry George when a high school junior , and became notorious among his classmates for preaching LVT to them . H e served in the S.W. Pacific during W.W. II, where he observed the results of land monopoly in The (more...)

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