People Are Bad At Odds And I Notice It Constantly Now

Here’s my actual pet peeve, the one I’ll get on a soapbox about if you let me: almost nobody is calibrated on probability, and it shows up at the game table constantly, and it’s honestly nothing new to anyone who’s watched people gamble or invest, but I don’t think people realize how much it’s costing them, in games or otherwise.

I price risk for a living. Not casually, that’s the literal job, sitting with distributions and confidence intervals and telling somebody what a one in two hundred year event is actually worth insuring against. So when I watch someone at a game table treat a thirty percent chance like it basically never happens, or treat it like a coin flip, or watch them get furious at a die roll that landed exactly where the math said it would roughly a third of the time, I feel something click in my chest that I have to actively suppress from turning into a lecture nobody asked for.

The specific failure mode I see most is people confusing unlikely with impossible. A card game with a deck of forty, three copies of the bad outcome in there, somebody draws it and says what are the odds of that, and the odds were roughly seven and a half percent, which is not nothing, that’s not a freak occurrence, that’s a thing that’s going to happen to somebody at the table more nights than not over a season of regular play. The flip side happens too, somebody plays around a one percent risk like it’s a near certainty and burns a turn defending against something that basically never comes up, and I’ve learned to just let it go most of the time because saying the actual number out loud mid game reads as showing off even when I mean it as help.

It’s not just games, that’s the part that actually bothers me more. I watch people make real decisions the same way, at work and outside it, treating a risk they’ve heard a scary story about as bigger than one they haven’t, regardless of the actual numbers behind either one. Somebody’s terrified of a thing with genuinely low odds because it’s vivid, and totally unbothered by something with much worse odds because it’s boring and familiar. That’s not a moral failing, it’s just how the human brain is built, we’re pattern machines running on stories instead of frequencies, and knowing that doesn’t make me immune to it either, it just means I catch myself doing it slightly more often than I used to.

My wife’s gotten used to me pausing a game to explain why a decision was actually fine even though it didn’t work out, there’s a difference between a bad decision and a bad outcome and conflating the two is maybe the single most common mistake I watch people make at a table. You can make the correct call with the numbers on your side and still lose, that’s what variance means, and you can make a terrible call and get bailed out, and neither of those changes whether the call itself was right. I’ve made peace with being the guy at the table who says that. Somebody’s got to.