The geometric mean of advertised trading course returns

Trading gurus love bragging about "average" returns, but they usually use a sneaky trick called the arithmetic mean. It’s like claiming someone with their head in an oven and feet in a freezer is "perfectly comfortable" on average.

Real wealth multiplies, it doesn't just add. If you lose 50% of your cash today, a 50% gain tomorrow doesn't bring you back to zero—it leaves you 25% in the hole.

The geometric mean is the grumpy truth-teller that accounts for this. It strips away the marketing fluff to show what’s actually left in your wallet after the volatility settles.

Wait, why does a 50% drop require a 100% gain just to break even?

It’s the cruel physics of the "base effect." When you drop from $100 to $50, you’ve just cut your engine capacity in half. You’re trying to climb the same mountain with half the fuel you started with.

To get back to $100, that remaining $50 has to grow by its own entire value—a full 100%—just to undo the damage. Math doesn't care about your "recovery arc" or your feelings.

In compounding, losses are heavy anchors while gains are light feathers. This "volatility drag" is the silent killer that trading gurus conveniently leave out of their glossy brochures.

So 'boring' consistency actually makes more money than high-risk 'moon' shots?

Precisely. In the cold, unfeeling world of compounding, 'boring' is the ultimate power move. If you gain 20% one year and lose 20% the next, you aren't back at zero—you’ve actually lost 4% of your total wealth.

That’s the volatility tax. The wider the swings, the more math punishes you. A steady, snooze-fest 5% gain every year will eventually lap the 'high-growth' trader who keeps having 'unfortunate' 25% pullbacks.

The math doesn't reward 'hustle' or 'energy'; it rewards the lack of mistakes. In the long run, the smoothest line on the graph usually ends up the highest.

How come we still prefer 'hustle' if it’s mathematically inferior?

Because your brain is a dopamine addict, not a spreadsheet. A steady 5% gain feels like watching paint dry, while a 50% swing provides a shot of pure adrenaline that the lizard brain craves.

Our ancestors survived by taking high-stakes risks for immediate rewards—like wrestling a mammoth—not by calculating compound interest. We are the descendants of lucky gamblers, not cautious actuaries.

The industry thrives on this glitch. 'Boring consistency' is a terrible marketing slogan. They sell the 'moon' because the reality of the math is far too sober for most to handle.

Is there any way to 'hack' that mammoth-hunting brain for better investing?

You can't delete 200,000 years of evolution with a seminar. Your brain will always scream 'do something!' during a dip. The only real 'hack' is to build a cage for your inner lizard.

This is why automation is the only way to win. By setting up recurring buys and deleting your trading apps, you effectively fire yourself. You're tricking your biology into behaving like a high-performance spreadsheet.

The goal isn't to become a logic god; it's to ensure your impulsive self can't reach the 'sell' button when the adrenaline hits.