By Shane Parrish
A guide to better decisions and clearer thinking
Subject
Themes
Most errors in judgment do not stem from poor reasoning. They stem from failing to recognise that reasoning is needed at all. Between every stimulus and response lies a gap, and what happens in that gap determines the trajectory of a life. Four biological defaults conspire to close the gap before conscious thought can intervene. The emotion default reacts to feelings rather than facts; Sonny Corleone's impulsive outburst in The Godfather sets off a chain of events ending in his death. The ego default protects self-image at any cost; Benedict Arnold, a capable military officer perpetually slighted by Congress, betrayed his country because resentment overpowered reason. The social default drives conformity; Warren Buffett observed that managers have every incentive to fail conventionally rather than risk looking foolish on an unconventional bet. The inertia default resists change; people remain in jobs they hate and relationships that bring no happiness because familiarity feels safer than uncertainty.
Most errors in judgment do not stem from poor reasoning. They stem from failing to recognise that reasoning is needed at all. Between every stimulus and response lies a gap, and what happens in that gap determines the trajectory of a life. Four biological defaults conspire to close the gap before…
Shane Parrish built his reputation through Farnam Street, a blog and media company dedicated to helping people make better decisions. Named after the street where Warren Buffett's Berkshire Hathaway is headquartered, Farnam Street draws heavily on the mental models tradition associated with Charlie…
Human behaviour is governed far more by automatic responses than by conscious deliberation. Four biological defaults, the emotion default, the ego default, the social default, and the inertia default, operate beneath awareness and hijack decision-making before a person even realises a decision is…
The conventional understanding of discipline frames it as an internal quality, a reservoir of willpower that some people possess in greater abundance than others. This framing is fundamentally misleading. What appears to be exceptional discipline is, more often than not, the product of a carefully…
The most consequential failure in decision-making is not choosing the wrong solution but solving the wrong problem entirely. Teams of smart, action-oriented people sitting together in a room will typically spend moments on problem definition and the rest of the meeting proposing solutions. The…
A natural human tendency confuses the quality of a decision with the quality of its outcome. This confusion, called resulting, is one of the most persistent obstacles to improving judgment. A good decision made with sound reasoning can produce a bad outcome due to factors beyond anyone's control. A…
Clear thinking and sound decision-making are powerful tools, but their value depends entirely on the goals toward which they are directed. A person who becomes exceptionally skilled at getting what they want but pursues the wrong things will arrive at the end of their life with a collection of…
Most errors in judgment do not stem from poor reasoning but from failing to recognise that reasoning is needed at all. Between stimulus and response lies a gap where two things can happen: a conscious pause to apply reason, or an automatic default behaviour that typically makes things worse. A…
An investment in a small restaurant chain illustrates the inertia default vividly. The CEO initially did everything right, but over time his behaviour shifted from fair partnership to dictatorship. Like a pot of water slowly reaching boil, the change was barely perceptible until it was boiling over.…
Self-control is the ability to master fears, desires, and other emotions. Mammals evolved to respond quickly to environmental threats and opportunities, and these physiological reactions cannot be eliminated. However, how one responds to them can be managed. Some people are like corks bobbing on an…
Building strength requires two components: choosing the right exemplars and practising their behaviours until they become second nature. At the intelligence agency, a colleague named Matt combined extraordinary talent with relentless work ethic and demanded perfection from everyone around him.…
The most critical step in decision-making is defining the problem correctly. Most people end up solving the wrong problem because the social default prompts teams to accept the first plausible description and leap into solution mode. A department inherited by Parrish had software that froze…
Long-Term Capital Management, a hedge fund backed by two Nobel laureates, returned over forty percent annually in its first three years. Investors piled in, watching friends double and quadruple their money. Then Asia and Russia experienced a financial crisis, and LTCM lost 4.6 billion dollars in…
A thought experiment invites you to sit on a park bench at eighty years old, hearing birds overhead, watching water flow past, leaves drifting to the ground. Who are the people in your life? How have you influenced them? What do you cherish, and what do you regret? Steve Jobs described remembering…
By Shane Parrish
Subject
Themes
Most errors in judgment do not stem from poor reasoning. They stem from failing to recognise that reasoning is needed at all. Between every stimulus and response lies a gap, and what happens in that gap determines the trajectory of a life. Four biological defaults conspire to close the gap before conscious thought can intervene. The emotion default reacts to feelings rather than facts; Sonny Corleone's impulsive outburst in The Godfather sets off a chain of events ending in his death. The ego default protects self-image at any cost; Benedict Arnold, a capable military officer perpetually slighted by Congress, betrayed his country because resentment overpowered reason. The social default drives conformity; Warren Buffett observed that managers have every incentive to fail conventionally rather than risk looking foolish on an unconventional bet. The inertia default resists change; people remain in jobs they hate and relationships that bring no happiness because familiarity feels safer than uncertainty.