Failure atlas
Under-collateralised designs
A liability that is larger than the assets that can actually be sold.
What to keep
If redemptions depend on selling the system's own token into a falling market, the defence and the crash are the same trade.
Collateral that is correlated with the debt is weaker collateral, whatever the dashboard says on a quiet day.
What this is not
Not a complaint, not a price chart, and not a complete history. Primary sources outrank this summary.