The Voyagers Log 06 - The birth of social statistics
Brussels, 1830s. Belgium is barely a few years old as a country, and its government has a very basic problem. It does not know much about the people it governs. How many are there, how tall are they, how many are born, how many die, how many break the law?
Adolphe Quetelet decides to find out. He was an astronomer by training, a man used to measuring stars. But the sky had given him a habit: count carefully, and look for patterns in the noise.
So he turned that habit on people. Chest sizes. Heights. Birth rates. Crime rates. And something odd showed up. The numbers were not chaotic. Measure enough people and they settled into the same shape every time, with most clustered around the middle and a few stretching out to the edges. The same curve astronomers used to handle errors in their observations was hiding inside human beings.
That led Adolphe Quetelet to a bold idea, and a slightly dangerous one: the average man. Not a real person, but a statistical center of a whole society. A way to see the group instead of the individual.
I'm in Brussels, where he built his career, to talk about what he got right and what he got wrong. The average turned out to be a powerful tool. It shaped public health, social science, and even gave us the formula behind the body mass index. But it also planted a habit that is hard to shake: treating the average as the ideal and everyone else as a deviation.
Here is the catch. Real people rarely match the average on everything at once. Design a cockpit, a chair, or a policy for the "average person" and you often end up designing for nobody.
Adolphe Quetelet gave us a new way to look at ourselves. The question is whether we remember what the average is for, and what it leaves out.
The Voyagers Log continues. More episodes, more cities, more stories about how people learned to turn the unknown into numbers. Subscribe and stay tuned.
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