A physicist’s 1960 calculation once pinpointed November 13 as the day humanity would collapse under its own numbers.
Heinz von Foerster, a physicist at the University of Illinois, published the paper “Doomsday: Friday, 13 November, A.D. 2026” alongside fellow researchers who set out to model global population trends. Their work analyzed population estimates stretching from around the time of Jesus through 1958, when human numbers appeared to be rising at an increasingly rapid, exponential rate. The team extrapolated this growth curve forward and arrived at a mathematical singularity where the number of people would, in theory, reach infinity.
Speaking with Time Magazine, von Foerster said: “For obvious reasons t0 shall be called ‘doomsday’, since it is on that date that N (the number of ‘elements,’ or people) goes to infinity, and the clever population annihilates itself. Our great-great-grandchildren will not starve. They will be squeezed to death.”
The date carried an extra layer of dark humor. Researchers later acknowledged that the specific day was likely chosen because it fell on von Foerster’s own birthday, adding a personal joke to an otherwise grim projection. The Friday the 13th timing only amplified the ominous tone of the prediction.
By the early 1990s, the paper’s trajectory had already diverged sharply from reality. Around 1993, actual global population counts began falling consistently behind the exponential curve the 1960 model had projected. The growth rate that had seemed unstoppable in 1958 began decelerating as fertility rates dropped across developed and developing nations alike.
The global birth rate now sits at slightly less than half what it was in 1960, when von Foerster’s team published their findings. Demographic transition theory, which predicts falling birth rates as countries develop economically, has proven far more accurate than the raw exponential extrapolation that produced the 2026 doomsday date.
Von Foerster’s work emerged during a period of intense anxiety about overpopulation. Paul Ehrlich’s “The Population Bomb” would follow in 1968, and the Club of Rome’s “Limits to Growth” report in 1972 would similarly model potential collapse scenarios based on resource constraints and population trends. These works shared a mathematical approach that treated human societies as systems governed by fixed laws rather than adaptive behaviors.
The 1960 paper’s methodology reflected the era’s faith in computational modeling while missing key variables that would bend the curve. Access to contraception, urbanization, women’s education, and shifting economic incentives all reduced fertility in ways the exponential model could not capture. The researchers assumed that past growth rates would continue indefinitely without accounting for how human choices might change those rates.
The doomsday date now sits mere weeks away on the calendar, though demographers and population scientists do not treat it as a live prediction. The paper survives primarily as a historical curiosity and a cautionary example of how mathematical elegance can outrun empirical reality when modeling complex human systems.