原文
Over 100,000,000,000 people have ever lived.
You'll draw, step by step: a year, a place, a life, each taken at random from real data.
When were they born?
Almost everyone who ever lived was born recently, because population grew exponentially, so a random birth is far more likely to fall near the present.
years before present · (log scale)
Where in the world?
Brighter clusters held more people.
A life then and there
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