Here's a coin that wins 60% of the time and pays even money. A real, provable edge. And most people would still go broke holding it.

Not because the edge fails. Because of the one number nobody checks: bet size.

Start with $100 and bet it all every flip. Heads, $200. Heads, $400. Then tails -- zero. With a 60% win rate a loss isn't rare, it's four out of ten. One is guaranteed, and it ends you.

So you bet a fraction instead. Say 50%. Now win-then-lose takes $100 to $150 to $75. You were right half the time and you're down 25%. That's volatility drag -- overbetting turns a real edge into a slow bleed.

So there are two ways to die: too big in one shot, or too big over many shots. The size that actually compounds sits between them. For this coin, Kelly says 20% -- and that's the maximum growth bet for a monster edge. Which should tell you something about anyone risking 50% of their account on one trade.

Here's the part that stuck with me: past the optimal point, bigger bets give you lower returns AND higher risk of ruin at the same time. Size isn't a dial. It's a hill.

What a disciplined trader does: size from the downside first. Ask how many losses in a row you can survive before deciding how big to bet. Run a fraction of Kelly -- a half or a quarter -- because your real edge is smaller and noisier than you think. And set the size as a rule before entry, not a feeling adjusted while you're down.

The handle to keep: your edge decides whether you win, but your bet size decides whether you survive to collect it.

This is educational commentary, not personalized financial advice.

Full breakdown with the charts and the risk-of-ruin math: https://youtu.be/_-GAUb55rKA

-- Paragon