Black Monday wasn’t one bad headline. It was a market with narrowing optionality meeting a shock — and then a feedback loop.
1987 had portfolio insurance. Today we have algos, passive flows, leverage, concentration and increasingly correlated positioning.
LIFO asks a different question: how wide is the market’s option set before everyone reaches for the same exit?
Not a Monday forecast. A map of fragility.
The diamond is a finite shape. The choices inside it are not. That gap between finite time and infinite possibility is where every meaningful human life has ever been lived.