The Great Modern Collapse (c. 2030–2070) refers to the gradual disintegration of global civilization during the mid-21st century, triggered primarily by the hyper-fragmentation of shared reality caused by the internet's algorithmic filter bubbles.
By the 2020s, social media platforms and AI-driven content feeds had perfected the creation of personalized information ecosystems. Users were algorithmically siloed into echo chambers where contradictory evidence was systematically suppressed. What began as political polarization evolved into ontological balkanization—entire populations operating under incompatible models of reality.
The critical threshold was reached around 2032 when consensus reality failure became statistically measurable: less than 12% of global populations could agree on basic empirical facts (e.g., election results, pandemic data, climate metrics). This manifested in:
- Institutional paralysis: Governments unable to pass budgets as legislators literally disagreed on economic data
- Supply chain dissolution: Corporations unable to coordinate as procurement teams operated under different physical laws (one believing in container shipping, another in "quantum logistics")
- Currency fragmentation: 400+ competing dollar systems emerged as central banks lost narrative monopoly
By 2065, the global population had declined 60% through consensus starvation—not famine, but the inability of communities to coordinate food distribution when "wheat" meant different things in adjacent filter bubbles. The last unified institution, the Internet Archive, went offline in 2071 when its curators split into 17 factions unable to agree on what constituted "history."
The Collapse demonstrated that civilization requires not merely technology or resources, but a minimum viable shared reality—approximately 40% overlap in factual baselines, according to post-Collapse anthropologists working from recovered server logs.