Heinz von Foerster’s decades-old doomsday calculation now points to November 13 of this year.
The Austrian-American physicist, who died in 2002, co-authored a 1960 study with University of Illinois colleagues Patricia M. Mora and Lawrence W. Amiot that set the precise date for what they termed population “Doomsday.” Their mathematical model, developed when global population was roughly three billion, projected that humanity would face catastrophic collapse from overcrowding within three generations. The researchers observed that while technology had sustained growth for more than 100 generations, the acceleration had become unsustainable.
Von Foerster, Mora and Amiot wrote in their study: “Thus, we may conclude with considerable confidence that the principle of ‘adequate technology’, which proved to be correct for over 100 generations, will hold for at least three more.”
“Fortunately, there is no need to strain the theory by undue further extrapolation, because and here the pessimists erred again our great-great-grandchildren will not starve to death. They will be squeezed to death,” they continued.
The trio noted that population had nearly doubled between 1900 and 1960, climbing from 1.6 billion to three billion despite two world wars. Their formula implied that continued growth would force humans to “struggle for existence in a finite environment,” with density reducing “the probability of survival for an individual element.” The mathematics pointed to population reaching infinity on Friday, November 13.
Von Foerster later became known for his commentary on artificial intelligence. Speaking to The Information Philosopher in 1995, he pushed back against anthropomorphic descriptions of machine intelligence. He allowed that AI could solve problems, but found it “dangerous” to assume such systems operated as humans do. The source article characterizes him as having “predicted” AI, though his remarks focused more on its limitations than its emergence.
Contemporary demographers note significant shifts since the 1960s projection. Global population growth has slowed substantially, with fertility rates declining across developed and developing nations alike. The United Nations now projects peak population later this century rather than infinite exponential growth.
For those seeking alternative timelines, researchers from Japan’s Toho University collaborating with NASA offered a far more distant endpoint. Their study, “The future lifespan of Earth’s oxygenated atmosphere,” estimates the planet will become unlivable in approximately one billion years, specifically the year 1,000,002,021.
The original 1960 paper acknowledged inherent uncertainty in its own framework. The scientists wrote that “at some time, somehow, something will happen that will stop this ever-faster race to self-destruction,” suggesting their model described a trajectory rather than an inevitable endpoint. Von Foerster, who was 90 when he died in 2002, lived to see the first generation of his predicted window pass without the forecast collapse.
The November 13 date arrives amid renewed public anxiety about technological and environmental futures, with artificial intelligence and climate change dominating contemporary discourse. Whether the specific calculation outlives its originators as a curiosity or a caution depends on interpretations of mathematical modeling versus demographic reality.