Mean Reversion: The Meanest Force in the Universe
Nothing outruns the mean. Gravity always wins.
In his book “The Myth of Sisyphus,” Albert Camus argued that Sisyphus knows the boulder comes back down and pushes anyway. That's a trader who understands mean reversion and trades it deliberately instead of fighting it in denial. The absurd hero who respects the mean.
Mean reversion is one of the most powerful forces in financial markets. But it doesn’t stop there: It operates in nature, in history, in civilizations, in human behavior, in your own life. Whether you acknowledge it or not:
In systems with hard limits, it's pure math. In messy, complex ones, it's a deep pattern. In real life, it's philosophy with teeth.
Let me explain.
Constrained Systems (Pure Math)
In constrained systems (those with measurable ceilings and floors) mean reversion is inevitable: the VIX hit 80 during COVID. Traders were pricing in the end of the world. Three months later it was back at 25. Fear is self-limiting. It burns its own fuel. The VIX can’t stay at 80 forever because the human nervous system can’t sustain maximum panic indefinitely. Physics doesn’t allow it.
Same with interest rates. Drop them to zero long enough and you choke the economy into recession. The floor becomes a trap.
Commodities follow the same rule. Oil can’t sit above $150 for long. It would trigger a global economic heart attack.
Physical reality sets the boundaries. Math does the rest.
In these systems, mean reversion isn’t a bet. It’s a countdown.
Complex Systems (Deep Pattern)
In bigger, messier systems (economies, societies, ecosystems) it’s not instant math, but the pattern still rules.
Booms, empires, tech hype cycles; no difference: reality always kicks in. The farther and longer the deviation, the uglier the reversion. It just takes more time and pain.
Take China’s Great Leap Forward: Mao pushed total collectivization and backyard furnaces, “steel over food,” ignoring math, incentives, and human nature simultaneously. The reversion was biblical: around 40 million dead.
Or zoom in to 2008: the “housing always goes up” narrative built leverage on top of leverage until the whole structure had to unwind violently. A decade of slow economic repair. Same force, different timeline, different body count.
The farther the deviation, the uglier the snap-back. Always.
Real Life (Philosophy with Teeth)
This is where it gets personal and mean.
You chase endless dopamine, endless growth, endless “progress”? Life eventually sends the bill.
Relationships, careers, health, nations: nothing escapes. The longer you fight the mean, the harder it hits when it finally catches you.
The trader who keeps doubling down because he’s “right and the market is wrong” is just deviation accumulating. Arrogance reverts to humility. The mean doesn’t argue with you. It just waits. And wins.
Camus ends his essay with one line: “One must imagine Sisyphus happy.” Not hopeful. Not delusional. Happy. Because he sees clearly and pushes anyway. That’s the trade. That’s always been the trade.
Gravity doesn’t care about your feelings, your politics, or your hopium. It just pulls. Respect the mean. Or get crushed by it.
Not financial advice.
Music: “Spinning Wheel” —Leonid & Friends