By the middle of this century the human race will have expanded in ten thousand years from less than ten million to nearly ten billion people. Some of the billions alive today still live in misery and dearth even worse than the worst experienced in the Stone Age. Some are worse off than they were just a few months or years before.
But the vast majority of people are much better fed, much better sheltered, much better entertained, much better protected against disease and much more likely to live to old age than their ancestors have ever been.
The availability of almost everything a person could want or need has been going rapidly upwards for 200 years and erratically upwards for 10,000 years before that: years of lifespan, mouthfuls of clean water, lungfuls of clean air, hours of privacy, means of travelling faster than you can run, ways of communicating farther than you can shout.
Even allowing for the hundreds of millions who still live in abject poverty, disease and want, this generation of human beings has access to more calories, watts, lumen-hours, square feet, gigabytes, megahertz, light-years, nanometres, bushels per acre, miles per gallon, food miles, air miles, and of course dollars than any that went before.
They have more Velcro, vaccines, vitamins, shoes, singers, soap operas, mango slicers, sexual partners, tennis rackets, guided missiles and anything else they could even imagine needing. By one estimate, the number of different products that you can buy in New York or London tops ten billion.
This should not need saying, but it does. There are people today who think life was better in the past. They argue that there was not only a simplicity, tranquillity, sociability and spirituality about life in the distant past that has been lost, but a virtue too. This rose-tinted nostalgia, please note, is generally confined to the wealthy. It is easier to wax elegiac for the life of a peasant when you do not have to use a long-drop toilet.
The rich have got richer, but the poor have done even better. The poor in the developing world grew their consumption twice as fast as the world as a whole between 1980 and 2000. The Chinese are ten times as rich, one-third as fecund and twentyeight years longer-lived than they were fifty years ago.
Even Nigerians are twice as rich, 25 per cent less fecund and nine years longer-lived than they were in 1955. Despite a doubling of the world population, even the raw number of people living in absolute poverty (defined as less than a 1985 dollar a day) has fallen since the 1950s. The percentage living in such absolute poverty has dropped by more than half – to less than 18 per cent.
That number is, o f course, still all too horribly high, but the trend is hardly a cause for despair: at the current rate of decline, it would hit zero around 2035 – though it probably won’t. The United Nations estimates that poverty was reduced more in the last fifty years than in the previous 500.
Enormous as that difference is, in labour terms the change is even more dramatic and the improvement is even more recent. Ask how much artificial light you can earn with an hour of work at the average wage. The amount has increased from twenty-four lumen-hours in 1750 b c (sesame oil lamp) to 186 in 1800 (tallow candle) to 4,400 in 1880 (kerosene lamp) to 531,000 in 1950 (incandescent light bulb) to 8.4 million lumen-hours today (compact fluorescent bulb). Put it another way, an hour of work today earns you 300 days’ worth of reading light; an hour of work 20 in 1800 earned you ten minutes of reading light.
What is the point of celebrating the continuing defeat of death, dearth, disease and drudgery, if it does not make people happier? But it is not true. The debate began with a study by Richard Easterlin in 1974, which found that although within a country rich people were generally happier than poor people, richer countries did not have happier citizens than poor countries. Since then the ‘Easterlin paradox’ has become the central dogma of the debate. Trouble is, it is wrong.
Two papers were published in 2008 analysing all the data, and the unambiguous conclusion of both is that the Easterlin paradox does not exist. Rich people are happier than poor people; rich countries have happier people than poor countries; and people get happier as they get richer.
Self-sufficiency is therefore not the route to prosperity. ‘Which would have advanced the most at the end of a month,’ Henry David Thoreau asked: ‘the boy who had made his own jack-knife from the ore which he had dug and smelted, reading as much as would be necessary for this – or the boy who had attended the lectures on metallurgy at the Institute in the meanwhile, and had received a Rodgers’ penknife from his father?’ Contra Thoreau, it is the latter, by a mile, because he has far more spare time to learn other things.