Dark Matter LabsDark Matter Labs Food as Infrastructure Nutrition Cascade xCO portfolio

A cascade pathway model from the Nutrition Continuity work at Dark Matter Labs.

How one food-system shock becomes many crises.

A shock like a bad harvest or a fertiliser squeeze doesn’t stay one problem. It splits across calories, protein and fresh produce, feeds back on itself through four loops, and ends in one of two places: a breakdown in public trust, or a hit to public finances. Turn shocks and interventions on and off, step through four time windows, and trace ten real risk pathways through the network below.

TypeInteractive model, qualitative
ReadsPathways, loops, timing and windows
Updated15 July 2026, version 2
How to read it

A shock is never just one problem. It’s a set of pathways firing together, at different speeds, and feeding back on themselves — and this model lets you trace each one.

This is the detailed engine behind the worked Camden Nutrition Risk Model, drawn in the same visual language as The Cascade Atlas. Four things make it specific:

  • A detailed network. Protein splits into three real groups — eggs & poultry, farmed fish, red meat & dairy — each falling at its own pace. The social side opens into seven early-warning signs of a system under strain; the financial side splits into three related risks (sticky prices, a shrinking budget, and an unhedged cost).
  • Time matters. Step through four windows — winter access, pre-harvest import reliance, rising input costs, and the long tail — to see which pathways are live in each one.
  • Real, current figures. Click any node for what it means, the number behind it, its source, and how fast it takes effect.
  • Ten named risk stories. Pick one and it lights up its exact route through the network, with each stage’s timing, the type of risk it carries, the early-warning sign to watch, and the fix that interrupts it.

This is a qualitative model, not a forecast. The shade of each node and the two gauges show relative pressure, from 0 to 100 — not real probabilities or dates. They show how the system is shaped, not what will happen.

The model
2026 shocks. Select one to turn it on or off.
Interventions from the portfolio, generalised
Volatility window
Shock (on) Pathway pressure, low to high Protein sub-chain Terminal risk
Terminal A: social-contract breakdown0%
Terminal B: financial instability0%
The four loops
L1 protectionism

Price → hoarding → price

A price spike triggers hoarding and export bans, which thins the market and pushes the next price even higher.

L2 affordability to health

Cost → deficit → cost

When people trade down to cheaper food, diet-related illness and malnutrition both rise — adding to the health bill and leaving less room to fix affordability.

L3 fiscal ratchet

Reactive crowds out preventive

Money spent reacting to a crisis leaves less to prevent the next one — so vulnerability, and next year’s bill, keep growing.

L4 legitimacy

Strain → distrust → worse response

When services buckle, people trust institutions less — which makes the next response weaker still.

Honest limits
  • Qualitative, not quantitative. The weights are illustrative, and the gauges show relative pressure — not real probabilities or dated forecasts.
  • The detail is a simplified selection. Real cascades have more nodes and connections; this keeps only the ones that carry the most weight, not a full census.
  • The time windows and lags are illustrative. They show rough order and speed, not calibrated timing.
  • It inherits the caveats of its sources. The 2026 figures are a mid-year snapshot; the Camden cost estimates are order-of-magnitude; the H5N1 figure is a US signal used for illustration.