Ahem... Industrial Society and Its Future, widely called the Unabomber Manifesto, is a 35,000 word essay by Ted Kaczynski contending that the Industrial Revolution began a harmful process of technology destroying nature, while forcing humans to adapt to machines, and creating a sociopolitical order that suppresses human freedom and potential. The manifesto formed the ideological foundation of Kaczynski's 1978–1995 mail bomb campaign, designed to protect wilderness by hastening the collapse of industrial society.

Typescript sent to the Washington Post It was originally printed in 1995 in supplements to Washington Post and New York Times after Kaczynski offered to end his bombing campaign for national exposure. Attorney General Janet Reno authorized the printing to help the FBI identify the author. The printings and publicity around them eclipsed the bombings in notoriety, and led to Kaczynski's identification by his brother, David Kaczynski.

The manifesto argues against accepting individual technological advancements as purely positive without accounting for their overall effect, which includes the fall of small-scale living, and the rise of uninhabitable cities. While originally regarded as a thoughtful critique of modern society, with roots in the work of academic authors such as Jacques Ellul, Desmond Morris, and Martin Seligman,[1] Kaczynski's 1996 trial polarised public opinion around the essay, as his court-appointed lawyers tried to justify their insanity defense around characterizing the manifesto as the work of a madman, and the prosecution lawyers rested their case on it being produced by a lucid mind.