Could a simple statistical calculation predict the end of the human race?

The Doomsday Argument uses the anthropic principle to suggest that humanity's extinction may be much closer than we hope. By examining the total number of humans who have ever lived, this controversial statistical method challenges our expectations for the future of our species.

Approximately 100 billion people have existed since the dawn of humanity. While we might imagine a future involving trillions of individuals across a colonized galaxy, the Doomsday Argument offers a sobering counter-perspective. It leverages the anthropic principle—the idea that our observations are constrained by the fact that we exist to observe them—to estimate the total lifespan of our species.

This approach builds on previous discussions regarding the fine-tuning of our universe and planet. By treating our position in the sequence of all humans as a random sample, the argument attempts to calculate the probability of our imminent demise. It serves as a provocative exercise in applying statistical reasoning to the survival of humanity.

Source: The Doomsday Argument