Amartya Sen on Population: Delusion and Reality



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The Price of Food


To return to "the balance between food and population," the rising food production per capita in the world as a whole, and in the third world in general, contradicts some of the pessimism that characterized the gloomy predictions of the past. Prophecies of imminent disaster during the last few decades have not proved any more accurate than Malthus's prognostication nearly two hundred years ago. As for new prophecies of doom, they cannot, of course, be contradicted until the future arrives. There was no way of refuting the theses of W. Paddock and P. Paddock's popular book Famine—1975!, published in 1968, which predicted a terrible cataclysm for the world as a whole by 1975 (writing off India, in particular, as a basket case), until 1975 actually arrived. The new prophets have learned not to attach specific dates to the crises they foresee, and past failures do not seem to have reduced the popular appetite for this creative genre.

However, after noting the rather dismal forecastiing record of doom-sayers, we must also accept the general methodological point that present trends in output do not necessarily tell us much about the prospects of further expansion in the future. It could, for example, be argued that maintaining growth in food production may require proportionately increasing investments of capital, drawing them away from other kinds of production. This would tend to make food progressively more expensive if there are "diminishing returns" in shifting resources from other fields into food production. And, ultimately, further expansion of food production may become so expensive that it would be hard to maintain the trend of increasing food production without reducing other outputs drastically.

But is food production really getting more and more expensive? There is, in fact, no evidence for that conclusion either. In fact, quite the contrary. Not only is food generally much cheaper to buy today, in constant dollars, than it was in Malthus's time, but it also has become cheaper during recent decades. As a matter of fact, there have been increasing complaints among food exporters, especially in the third world, that food prices have fallen in relation to other commodities. For example, in 1992 a United Nations report recorded a 38 percent fall in the relative prices of "basic foods" over the last decade.(24) This is entirely in line with the trend, during the last three decades, toward declining relative prices of particular food items, in relation to the prices of manufactured goods. The World Bank's adjusted estimates of the prices of particular food crops, between 1953-1955 and 1983-1985, show similarly steep declines for such staples as rice (42 percent), wheat (57 percent), sorghum (39 percent), and maize (37 percent).(25)

Not only is food getting less expensive, but we also have to bear in mind that the current increase in food production (substantial and well ahead of population growth, as it is) is itself being kept in check by the difficulties in selling food profitably, as the relative prices of food have fallen. Those neo-Malthusians who concede that food production is now growing faster than population often point out that it is growing "only a little faster than population," and they are inclined to interpret this as evidence that we are reaching the limits of what we can produce to keep pace with population growth.

But that is surely the wrong conclusion to draw in view of the falling relative prices of food, and the current difficulties in selling food, since it ignores the effects of economic incentives that govern production. When we take into account the persistent cheapening of food prices, we have good grounds to suggest that food output is being held back by a lack of effective demand in the market. The imaginary crisis in food production, contradicted as it is by the upward trends of total and regional food output per head, is thus further debunked by an analysis of the economic incentives to produce more food.

Deprived Lives and Slums


I have examined the alleged "food problem" associated with population growth in some detail because it has received so much attention both in the traditional Malthusian literature and in the recent writings of neo-Malthusians. In concentrating on his claim that growing populations would not have enough food, Malthus differed from Condorcet's broader presentation of the population question. Condorcet's own emphasis was on the possibility of "a continual diminution of happiness" as a result of population growth, a diminution that could occur in many different ways—not just through the deprivation of food, but through a decline in living conditions generally. That more extensive worry can remain even when Malthus's analysis of the food supply is rejected.

Indeed, average income and food production per head can go on increasing even as the wretchedly deprived living conditions of particular sections of the population get worse, as they have in many parts of the third world. The living conditions of backward regions and deprived classes can decline even when a country's economic growth is very rapid on the average. Brazil during the 1960s and 1970s provided an extreme example of this. The sense that there are just "too many people" around often arises from seeing the desperate lives of people in the large and rapidly growing urban slums—bidonvilles—in poor countries, sobering reminders that we should not take too much comfort from aggregate statistics of economic progress.

But in an essay addressed mainly to the population problem, what we have to ask is not whether things are just fine in the third world (they obviously are not), but whether population growth is the root cause of the deprivations that people suffer. The question is whether the particular instances of deep poverty we observe derive mainly from population growth rather than from other factors that lead to unshared prosperity and persistent and possibly growing inequality. The tendency to see in population growth an explanation for every calamity that afflicts poor people is now fairly well established in some circles, and the message that gets transmitted constantly is the opposite of the old picture postcard: "Wish you weren't here."

To see in population growth the main reason for the growth of overcrowded and very poor slums in large cities, for example, is not empirically convincing. It does not help to explain why the slums of Calcutta and Bombay have grown worse at a faster rate than those of Karachi and Islamabad (India's population growth rate is 2.1 percent per year, Pakistan's 3.1), or why Jakarta has deteriorated faster than Ankara or Istanbul (Indonesian population growth is 1.8 percent, Turkey's 2.3), or why the slums of Mexico City have become worse more rapidly than those of San José (Mexico's population growth rate is 2.0, Costa Rica's 2.8), or why Harlem can seem more and more deprived when compared with the poorer districts of Singapore (US population growth rate is 1.0, Singapore's is 1.8). Many causal factors affect the degree of deprivation in particular parts of a country—rural as well as urban—and to try to see them all as resulting from overpopulation is the negation of social analysis.

This is not to deny that population growth may well have an effect on deprivation, but only to insist that any investigation of the effects of population growth must be part of the analysis of economic and political processes, including the effects of other variables. It is the isolationist view of population growth that should be rejected.


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