The Success Equation: Untangling Skill and Luck | Michael Mauboussin | Talks at Google

TL;DR

Skill and luck can be untangled by placing an activity on a continuum from pure luck to pure skill and asking whether a different outcome could reasonably have occurred. Michael Mauboussin defines luck through three conditions and offers a practical test: if you can lose on purpose, the activity involves skill. Read on to understand the framework, its applications, and why people often misjudge outcomes.

Transcript

MALE SPEAKER: Hello, everyone. Thank you all for coming. And folks who are joining remotely-- welcome, as well. Today we have a very, very special speaker-- someone whose work I deeply admire and have been fond of. I was thinking about what is the best way to introduce him? Should I say he is a Managing Director at Credit Suisse? Should I say he's ... Read More

Key Insights

• 🥺 The paradox of skill highlights the inverse relationship between absolute skill and relative skill, leading to greater reliance on luck.
• 🤞 Path dependent activities, such as artistic success or financial performance, are inherently unpredictable and influenced by luck.

Questions & Answers

Q: How can you distinguish skill from luck in an outcome?

Place the activity on a continuum ranging from pure luck to pure skill. Then ask whether the outcome reflects repeatable execution and whether replaying events could reasonably have produced a different result.

Q: How does Michael Mauboussin define skill?

He defines skill as the ability to apply one’s knowledge readily in execution or performance. In practical terms, a skilled person knows how to do something and can do it on cue.

Q: What three conditions does Michael Mauboussin use to define luck?

Luck operates on an individual or organization, can produce a good or bad result, and allows for the reasonable possibility that a different outcome could have occurred. The positive and negative possibilities are not necessarily symmetrical.

Q: What is the lose-on-purpose test for identifying skill?

Ask whether a participant can intentionally lose at the activity. If losing on purpose is possible, some skill must be involved; if it is not possible, the activity is basically all luck.

Q: Which activities illustrate the ends of the skill-luck continuum?

Lotteries and roulette wheels sit near the pure-luck end of the continuum. Running races and chess sit near the pure-skill end.

Q: How did luck affect Michael Mauboussin’s early career?

During a 10-minute job interview at Drexel Burnham Lambert, he noticed a Washington Redskins trash can and mentioned it to the senior interviewer. The conversation stretched to 15 minutes, and that interviewer later overrode six negative hiring votes, leading Mauboussin to say his career was launched by a trash can.

Q: What is the paradox of skill?

As absolute skill improves, competitors become more evenly matched in relative terms. That narrowing of the skill gap gives luck a greater role in determining outcomes.

Q: Why are path-dependent outcomes difficult to predict?

Path-dependent activities, including artistic success and financial performance, are influenced by luck and are inherently unpredictable. People may still construct narratives that impose meaning on those outcomes and understate luck’s role.

Summary & Key Takeaways

• The paradox of skill states that as absolute skill improves, luck becomes more important in determining outcomes.

• Path dependent activities, such as artistic success or financial performance, are inherently unpredictable and influenced by luck.

• The human tendency to create narratives and impose meaning can lead to a misunderstanding of the role of luck in outcomes.