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Wednesday 25 July 2018

Thinking in Bets – Making smarter decisions when you don’t have all the facts – by Annie Duke

Some Excerpts


CHESS V POKER

- Chess, for all its strategic complexity, isn’t a great model for decision making in life, where most of our decisions involve hidden information and a much greater influence of luck.



- Poker, in contrast, is a game of incomplete information. It is a game of decision making under conditions of uncertainty over time. Valuable information remains hidden. There is always an element of luck in any outcome. You could make the best possible decision at every point and still lose the hand; because you don’t know what new cards will be dealt and revealed. Once the game is finished and you try to learn from the results, separating the quality of your decisions from the influence of luck is difficult.



- Incomplete information poses a challenge not just for split second decision making, but also for learning from past decisions. Imagine my difficulty in trying to figure out if I played my hand correctly when my opponents cards were never revealed for e.g. if the hand concluded after I made a bet and my opponents folded. All I know is that I won the chips. Did I play poorly and get lucky? Or did I play well?



- Life resembles poker, where all the uncertainty gives us the room to deceive ourselves and misinterpret the data.

- Poker gives us the leeway to make mistakes that we never spot because we win the hand anyway and so don’t go looking for them or

- The leeway to do everything right, still lose and treat the losing result as proof that we made a mistake. 



REDEFINING Wrong

- When we think in advance about the chances of alternative outcomes and make a decision based on those chances, it doesn’t automatically make us wrong when things don’t work out. It just means that one event in a set of possible futures occurred.



BACKCASTING AND PRE MORTEM



- Backcasting means working backwards from a positive future.

- When it comes to thinking about the future – stand at the end (the outcome) and look backwards. This is more effective than looking forwards from the beginning.

- i.e. by working backwards from the goal, we plan our decision tree in more depth.

- We imagine we’ve already achieved a positive outcome, holding up a newspaper headline “We’ve Achieved our Goal” Then we think about how we got there.

- Identify the reasons they got there, what events occurred, what decisions were made, what went their way to get to the goal.

- It makes it possible to identify low probability events that must occur to reach the goal You then develop strategies to increase the chances of such events occurring or recognizing the goal is too ambitious.

- You can also develop responses to developments that interfere with reaching the goal and identify inflection points for re-evaluating the plan as the future unfolds.



- Pre mortem means working backwards from a negative future.



- Pre mortem is an investigation into something awful but before it happens.



- Imagine a headline “We failed to reach our Goals” challenges us to think about ways in which things could go wrong.



- People who imagine obstacles in the way of reaching their goals are more likely to achieve success (Research p223)



- A pre mortem helps us to anticipate potential obstacles.



- Come up with ways things can go wrong so that you can plan for them



- The exercise forces everyone to identify potential points of failure without fear of being viewed as a naysayer.





- Imagining both positive and negative futures helps us to build a realistic plan to achieve our goals.

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