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LifeApril 30, 2026

From Trader to Dad: Everything I Learned About a Sense of Probability

Trading taught me to live with uncertainty. I'm more and more convinced it's the ability kids should get earliest — and are taught least.


During my years as a trader, I dealt with one thing every single day: uncertainty.

Not "right or wrong," but "this has a 60% chance — how should I size my bet." That way of thinking changed how I see the world — and it changed what I want to give my child.

School barely teaches a sense of probability

We teach kids that 1+1=2, we teach the standard answer, we teach that "what's right is right." But the real world has almost no standard answers. The real world is all probability:

  • Will it rain today?
  • Is this decision worth the risk?
  • I lost once — was the strategy wrong, or was I just unlucky?

A person without a sense of probability attributes every failure to "I'm not good enough," rather than "the odds didn't fall my way this time." That's a very expensive cognitive gap.

A game is the safest sandbox for practicing probability

Losing a round in a game costs almost nothing. But what the child lives through in that round is real:

  • Betting, taking on risk, facing luck.
  • Telling apart "I made a bad decision" from "I just didn't hit it."
  • And after losing, still wanting one more round — which is itself the ability to make peace with uncertainty.

That's why a sense of probability and risk is an explicit branch on the momomori ability tree. I haven't started that product yet, but I already know it will arrive in the form of a game.

Because some abilities can't be lectured into a child. They can only be played in.

# probability# risk# personal