A controversial statistical formula, known as the 'doomsday argument,' is being used by researchers to predict the exact moment humanity will be wiped out. The equation estimates that roughly 117 billion people have lived throughout human history. Scientists then assume that the current population occupies a random place in humanity's timeline, rather than an unusually early one. Under this theory, there is a 95% chance that the 117 billion people who have already lived represent just 5% of all humans who will ever exist.
The Calculation
Based on the mathematical fact that 100% is 20 times larger than 5%, researchers multiply the 117 billion figure by 20. This yields an estimated maximum number of humans who will ever exist: 2.34 trillion people. Using current birth rates and trends, humanity is projected to reach this number in roughly 17,100 years. Proponents argue that humanity has a 95% chance of dying out before that time passes, as it represents a statistical upper limit.
Criticism of the Theory
However, the 'doomsday argument' remains highly controversial, with many scientists rejecting it. Critics say the assumptions are overly simplistic and ignore the vast array of threats to humanity. Others argue that humanity could easily beat the calculations and survive for millions of years if we develop new technologies or colonize other planets. The argument is based on the Copernican Principle, the idea that humans do not occupy a special place in the universe.
Nobel Physicist's Chilling Forecast
The discussion comes as Nobel Prize-winning physicist David Gross delivered a chilling forecast for humanity's extinction, much closer than most anticipate. Gross, an American theoretical physicist and string theorist who won the Nobel Prize in Physics in 2004, highlighted dangers from nuclear conflict and artificial intelligence. During a recent discussion, when asked if humanity would achieve a unified theory within 50 years, Gross grimly told LiveScience: "Currently, I spend part of my time trying to tell people ... that the chances of you living 50 [more] years are very small. Due to the danger of nuclear war, you have about 35 years."
