# Mistakes and Coolers

In David Sklansky’s classic book The Theory of Poker, the author introduces his Fundamental Theorem of Poker:

Every time you play a hand differently from the way you would have played it if you could see all your opponents’ cards, they gain; and every time you play your hand the same way you would have played it if you could see all their cards, they lose. Conversely, every time opponents play their hands differently from the way they would have if they could see all your cards, you gain; and every time they play their hands the same way they would have played if they could see all your cards, you lose.

In his view, a mistake is any play that delivers a gain to an opponent.  It’s worth noting that this is Sklansky’s personal definition of mistake, used for purposes of his book, and deviates considerably from a standard dictionary definition (such as “an action or judgment that is misguided or wrong”).  For a poker action to be a mistake, it doesn’t matter who ultimately wins the pot; you can take an action in a poker hand that you would not have taken if you could see your opponent’s cards, then draw out a winning card on the river despite long odds.  You win the pot, but your earlier action is still a mistake.  It also doesn’t matter if other players would have made the same play, as often happens when the 2nd nut hand loses to the absolute nuts.  If you could see your opponent’s cards, you would act differently.

My previous blog post noted that We All Make Mistakes.  So it seems inevitable that the next time I play poker after writing that piece (last night), I suffered through a flood of mistakes.

I made the mistake of being passive when I should have been aggressive, calling a pre-flop raise with QQ, intending to set a trap.  I later learned the villain had TT, after a flop of Js Ts 3s (giving him a set; me an overpair and flush draw).  The 4th T came on the turn, giving him quads.  In hindsight, I might have lost more had I re-raised pre-flop; but at the time of the pre-flop action, not re-raising was a mistake.

I made calling mistakes.  Many of them.

• In the hand noted above, I called a river bet after a K came on the last card.  Duh… calling when the villain has quads is a mistake!
• I called turn and river bets with 88 on a board of 432-7-J.  The villain had QQ and just called my pre-flop raise.  His trap worked, whereas my earlier attempt to set a trap with QQ failed.
• I called flop and turn bets (the latter putting me all-in) with 22 after a flop of 972.  The villain had 99 for top set, crushing my bottom set.  This is a cooler, and fortunate for me that my stack wasn’t too deep.  Under Sklansky’s Fundamental Theorem of Poker, however, calling was a mistake.  If I could see the villain’s cards, I would not have called.  Ouch!
• With KQs, I called a check-raise and river bet on a board of K64 (two clubs)-6-5.  This was late, the flop was very drawy, a scary turn card came, and the bluffing frequency around the table escalated considerably in the prior half hour.  Not this villain –> he tables A6.  Had I checked-back on the turn for pot-control, I still would make the mistake of calling a river bet, but would lose far less.
• There was one at least one other river call mistakes, but thankfully I cannot now recall the details.

I made betting and bet-sizing mistakes.  Many of them.

• With 77 on the button, I flopped a set on a board of 875 (rainbow), and called a flop bet along with two other callers.  The turn J created a flush draw, and everyone checked to me.  One villain called my bet.  The river K completed the flush draw.  I bet again, and the villain called with a very weak flush.  He had 62s, got to the flop when no one raised, flopped an open-ended straight draw and turned a flush draw.  In addition to the river bet mistake, I was too passive pre-flop.  Another cooler, yet still a mistake according to Sklansky’s definition.
• I made a flush on the river (after my turn semi-bluff got one caller) and a large bet after the villain checked.  He called again, with a bigger flush than mine.  Yet another cooler / mistake.
• Several times I made a top pair / good kicker hand on the flop, where the villains were too weak to call a bet.  I bet anyway and they all folded.  Had I been more patient, perhaps I could have gotten some value on a later street by giving them a chance to catch up.
• Other times I was the pre-flop raiser and made continuation bets on flops that didn’t connect with my hand at all, only to be called and have to surrender later.  C-betting with air against a top pair hand is a mistake.

Of course, I didn’t know the villains’ cards in any of these hands at the time of the mistakes.  That’s the thing with the Fundamental Theorem of Poker.  We have to take actions with incomplete information.  This leads to frequent mistakes.  If we can make fewer mistakes than our opponents, we can win over the long run.  The first key to making fewer mistakes is to improve hand reading skills.  Better reads = fewer mis-reads = fewer mistakes.  The second key is to learn to mitigate the effects of tilt.  Tilt leads to anger and other negative emotions, and intense anger shuts down higher brain functions — especially decision making and self-control.

The Stoic philosopher Epictetus said: “An ignorant person is inclined to blame others for his own misfortune. To blame oneself is proof of progress. But the wise man never has to blame another or himself.”

Put me down for progress, with a long way to go to reach wisdom.

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