Polycrisis

№ 2026-87 · November 2026 · 38 min

Polycrisis Resilience: A General Definition and the H Heuristics Framework

Polycrisis Resilience, a concept developed by Hunter Hughes, is the capacity of individuals, communities, institutions, economies, societies and interconnected systems to anticipate, withstand, adapt to, recover from and reduce vulnerability to multiple interacting crises; the H Heuristics framework builds it through development (the world death rate from natural disasters fell 98% between the 1920s and 2010s; composite capacity averages 22 in low-income and 70 in high-income countries, income explaining 81% of the variation), and a permutation test shows the clustering of weaknesses across 166 countries is almost entirely income.

№ 2026-86 · November 2026 · 22 min

Polycrisis Resilience: The H Heuristics Concept

Polycrisis Resilience, the H Heuristics concept, is the systematic development of five capacities to prevent, absorb, adapt to and recover from interconnected crises while reducing their cascading effects; across 145 countries the five capacities rise together (one component carries 81% of their variance; income explains 86% of the composite, 22nd percentile in low-income against 76th in high-income countries), they go with lower structural vulnerability but do not forecast any single shock's outcome, so the concept's claim is about cascades and long-term consequences.

№ 2026-85 · November 2026 · 26 min

Addressing Interconnected Global Crises Through Coordinated Economic Development

Earlier progress in one system predicts faster later progress in others (9 of 42 pairs significant against 2 by chance, mean standardised coefficient +0.095, stable across four time windows), with water and sanitation, power and income the strongest leading systems and health almost isolated; lopsided development is associated with worse survival in the pandemic (−0.33 standard deviations of life expectancy against trend per standard deviation of imbalance) but not with growth risk or disaster mortality, and water and sanitation is the highest-leverage bottleneck in 47 of 124 countries.

№ 2026-83 · November 2026 · 26 min

Defining and Understanding Polycrisis Resilience

A country's composite resilience in the 2009 financial crisis correlates just 0.09 with its resilience in the 2020 pandemic, only 4 of 153 countries are in the top third in both (chance gives 4.5), and the five things the word covers agree only partly, so resilience should be defined as that of a system, to a class of shock, in a function, over a horizon, relative to a stated reference path.

№ 2026-82 · November 2026 · 27 min

A Unified Framework for Understanding and Mitigating the Global Polycrisis

Environmental exposure is uncorrelated with economic, technological and geopolitical exposure across 146 countries (|r| at most 0.05) and a single score keeps only 39% of the information; under 10,000 random weightings just three countries are reliably in the worst twenty and the median country's rank spans 62 places, so the framework should unify the language, the diagnosis and the response while keeping four scores and a capacity score visible.

№ 2026-81 · November 2026 · 25 min

Polycrisis Resilience This Century, 2000–2100

The world's disaster death rate fell 97% from the 1920s to the 1990s and has been flat since, while years with 100,000 or more deaths still come about one in five; on 2000–24 death rates and UN population paths the century's deaths run from about 3 million (capacity improving 3% a year) to 9 million (hazards growing 1% a year with no capacity gain), a factor of three that dwarfs the quarter-wide luck within any one path.

№ 2026-80 · November 2026 · 26 min

The Economics of Polycrisis Prevention: Quantifying the Human and Economic Returns of Resilience

Recorded disaster loss is so lumpy that the worst 1% of country-years hold 58% of damage and 76% of deaths, so an early-warning investment worth four dollars per dollar on average recovers its cost in only 69% of decades; it would return $51 per dollar in rich countries but $0.5 in the poorest on assets alone, and aiming it at the riskiest tenth by past deaths halves the cost per life but still misses two thirds of later deaths.

№ 2026-79 · November 2026 · 24 min

Polycrisis Resilience: Who Can Afford It?

In 34 of 141 countries, home to 2.7 billion people, central-government interest exceeds government health spending, and 17 of the 36 highest-risk countries are among them; the median low-income country's interest bill tripled to 1.9% of GDP since 2010 while health spending slipped to 0.9%, and a resilience programme worth 1% of GDP would cost a quarter of the squeezed countries' interest bill.

№ 2026-75 · October 2026 · 26 min

The Architecture of Global Technological Diffusion

Infrastructure-embedded technologies took a median of 26.5 years to go from 10% to 50% of US households, five times as long as stand-alone products; today no low-income country has passed 50% internet use, and the poorest trail the rich by 20 to 34 years or more on the technologies that matter most. Income, schooling, institutions, finance, power and place explain 86% of cross-country diffusion, vaccination escapes them, and at equal income each 10 points of diffusion goes with 19% lower child mortality.

№ 2026-74 · October 2026 · 24 min

The Economics of Prevention Versus the Cost of Crisis

In 2015–2024 official donors spent $263 billion responding to crises in developing countries and $21 billion preventing them, 8 cents for every response dollar, while recorded disaster damage averaged $194 billion a year. Seventeen published estimates put prevention's return at 2 to 87 dollars per dollar across air pollution, climate, health, food, water, infrastructure, pandemics and conflict, and a cautious portfolio still returns several times its cost.

№ 2026-71 · October 2026 · 24 min

The Polycrisis Apocalypse Humanity Is Facing

On a central measure, 1.2 billion people (16% of humanity) live today where two or more survivability tiers bind on weak institutions; holding today's institutions fixed, warming lifts that to 2.8–4.5 billion by the 2090s, three in five of them in Africa. With 65 armed conflicts in 2025, the most since 1946, and an unsafe equilibrium that could outlast every past civilisation, the cheapest time to choose the buffered path is now.