Replay four real crises on a stylised network, step through the dated events, and switch a rescue off to see what the model says would have happened.
Stock markets fall sharply in the week to 10 October while funding pressure continues.
What the model shows: the failure of a troubled investment bank drags down the money market fund that lent to it, a capital injection keeps a large insurer standing, and bank capital stops weaker regional banks from following.
Stylised model: archetype institutions, illustrative numbers. Dates are real; the model days are its own clock and not a calendar. No figures are attached to real firms.
Turn a rescue off and the model replays the episode without it.
In the model, how many institutions fail without the AIG loan?