Mental Modelsbeginner
Get Motivated
Breaking habits requires initial motivation, followed by positive thinking to rewire neural networks.
neuroscience · psychology↗
ONE OF SEVEN WAYS OF SEEING
Mental Models
Build a toolkit for understanding how the world works.
Mental Modelsintermediate
Get Rid of Extreme Ideology. It Cabbages up the Mind
Extreme ideology rigidly narrows thinking and undermines intellectual honesty. To counteract this, one should be able to state opposing arguments better than their proponents before claiming an opinion.
politics · philosophy↗
Mental Modelsintermediate
Get Your Moral Code Straight
Munger advocates a clear moral code and vivid examples when persuading clients. The passage also presents Marks on resisting crowd emotions and Buffett on investing within his circle of competence.
ethics · business↗
Mental Modelsintermediate
Getting Hot Without Getting Mad
A technique for maintaining task conflict without relationship conflict by framing disagreements as debates and focusing on 'how' rather than 'why', exemplified by the Wright brothers' productive argument about propeller design.
sociology · business↗
Mental Modelsintermediate
Giving Back While Alive
Charlie Munger advocates for giving away wealth while still alive to experience the joy of giving and to make a rational contribution to society, distinguishing himself from typical businesspeople who outsource giving.
economics · business↗
Mental Modelsintermediate
Global and Local Maxima
A local maximum is at least as good as nearby alternatives; a global maximum is at least as good as every alternative in the defined search space. Improving a locally good solution may require trying a different approach, sometimes accepting a temporary decline without knowing whether it will pay off.
engineering · computer science↗
Mental Modelsintermediate
Goals, Risks, and Acceptable Losses
The Wright brothers achieved powered flight by taking calculated risks and tolerating setbacks, recognizing that progress requires step-by-step evolution and acceptance of potential losses.
engineering · history↗
Mental Modelsintermediate
Gold Is Stupid. Invest into Productive Businesses
Charlie Munger favors productive businesses over gold, which he describes as useful for concealing wealth in an extreme crisis. The accompanying Buffett interview emphasizes understanding investments, accepting mistakes and avoiding losses that could wipe an investor out.
economics · business↗
Mental Modelsintermediate
Goldberg Rule
In the historical studies described here, the Goldberg Rule combined MMPI scores more accurately than the clinicians who judged the same cases. The comparisons illustrate how a consistent statistical rule can outperform expert judgment, even after training or access to the rule’s result.
medicine · decision science↗
Mental Modelsintermediate
Good Behavior and Principles Are Beneficial. Stick to Them
Charlie Munger emphasizes that absorbing elementary worldly wisdom through good behavior and principles is beneficial for serving others, serving oneself, and making life more fun. He advocates for sticking to these principles despite personal lifestyle choices.
business · economics↗
Mental Modelsintermediate
Good Behavior Is Productive and Your Only Asset
Charlie Munger advocates that the most reliable path to success is to behave in a way that earns deserved trust, focusing on deserving what you want rather than gambling or speculating. He emphasizes learning from others' mistakes and betting selectively to avoid catastrophic losses.
economics · business↗
Mental Modelsintermediate
Good Decisions and Bad Outcomes
Even well-reasoned decisions can lead to negative outcomes, especially when all options are bad. The quality of a decision should be judged on the process and information available, not solely on the result.
politics · sociology↗
Mental Modelsbeginner
Good Design Applies to More Than Just Buildings and Structures
Good design is not limited to physical architecture but applies to processes such as clinical trials, cockpit interfaces, and organizational roles, balancing multiple goals like purpose, usability, clarity, sustainability, and budget.
engineering · technology↗
Mental Modelsintermediate
Good Habits Are Beneficial. Bad Habits Have to Be Avoided
Munger compares habits to chains that become harder to break with repetition. His advice is to cultivate useful habits and address harmful ones before they become entrenched.
business · psychology↗
Mental Modelsintermediate
Good Intentions, Bad Results
The dot-com bubble illustrates how expectations of future growth can outrun evidence about individual businesses. The model asks what information supports an investment story before money, time, or reputation is committed.
business · economics↗
Mental Modelsintermediate
Good Summary Sources
A heuristic for evaluating summary sources by considering their position to know, incentives to be careful with the truth, and whether they are genuinely engaged in providing a summary rather than using it as a setup for a less trustworthy claim.
sociology · education↗
Mental Modelsintermediate
Good Thinking!
Good thinking requires both proper brain care (nutrition, exercise, sleep, mental activity) and the courage to let go of irrational beliefs in favor of skeptical, rational thinking.
education · neuroscience↗
Mental Modelsadvanced
Goodman's Riddle of Induction
The riddle shows that consistent observations can confirm contradictory theories, illustrated by the grue paradox where observing blue objects confirms either that they are blue or that they are grue (blue until time t then green).
science · philosophy↗
Mental Modelsintermediate
Google Is a Mirror Reflecting Back What You Give It
Search results from Google often reflect the user's assumptions and the way they phrase their query, rather than providing an objective answer. This can reinforce misconceptions if the user is not careful, as illustrated by the learning styles controversy.
technology · education↗
Mental Modelsintermediate
Grass and Trees
Taleb contrasts ordinary variation in Mediocristan with Extremistan, where rare events can dominate the total. His grass-and-trees analogy warns against using a Gaussian model when it assigns too little weight to consequential extremes.
science · statistics↗
Mental Modelsintermediate
Gray Swan
Fractal randomness can transform some Black Swans into Gray Swans by allowing us to model extreme events, but not all surprises can be eliminated. The distinction lies between modelable extreme events (Gray) and completely unforeseen events (Black).
philosophy · economics↗
Mental Modelsbeginner
Green Behavior
Green behavior is a personality trait centered on helping others, fostering harmony, and demonstrating empathy. Notable examples include Mr. Rogers, Gandhi, Michelle Obama, Jimmy Carter, and Jesus.
psychology · sociology↗
Mental Modelsintermediate
Green Personality (Security-Seeking)
In Erikson’s color framework, Green describes a preference for security and familiarity. He recommends listening to worries without dismissing them and supporting manageable steps into unfamiliar situations.
business · education↗
Mental Modelsintermediate
Green Personality Type
Greens are relaxed, methodical, and discreet individuals who prefer small groups and friendly but reserved interactions. They avoid being the center of attention and need trust to open up fully.
business · psychology↗
Mental Modelsbeginner
Green Personality Type: Need for Stability and Predictability
In Erikson’s color framework, Greens prefer stability, predictable plans, and clear responsibilities. He recommends explaining a proposed change in detail and checking that the person is comfortable with the plan.
business · psychology↗
Mental Modelsbeginner
Green Personality: Reliability and Team Focus
Erikson portrays Greens as reliable, team-focused people motivated to avoid causing trouble and to please others. The description can prompt discussion of teamwork, but a label alone does not establish someone’s capacity or reliability.
business · education↗
Mental Modelsintermediate
Green Taxes
Green taxes, particularly carbon taxes, are used by governments to set a price on emissions, incentivizing reductions and innovation while generating revenue. Effective design can account for behavioral biases like loss aversion and present bias through gradual implementation and progressive revenue use.
environment · economics↗
Mental Modelsbeginner
Gresham's Law
When currencies with different underlying values must circulate at the same official value, people have an incentive to spend the overvalued currency and retain the undervalued one. Broader applications are analogies about incentives.
economics · business↗
Mental Modelsintermediate
Grey Areas of Reasonableness
Trust and skepticism exist on a spectrum. Evaluating theories, sources, and evidence with a clear framework helps distinguish blind trust or skepticism from healthy forms of each.
science · philosophy↗
Mental Modelsintermediate
Grip of Four Hands
When two equally matched opponents reach a stalemate, the grip of four hands represents the impasse. To break it, one must change tactics, timing, or approach, introducing an unexpected element to win decisively.
military · sports↗
Mental Modelsintermediate
Group Dynamics
Group dynamics shape who speaks, which issues get discussed, and whether a team learns from mistakes. Leaders can encourage honest discussion by admitting their own mistakes and responding constructively when others raise concerns.
psychology · sociology↗
Mental Modelsintermediate
Growing People
Growing people is a commitment to creating an organizational environment where individuals can truly develop as human beings, beyond mere training programs, by aligning personal and organizational growth.
business · education↗
Mental Modelsintermediate
Growth and Underinvestment
Growth and underinvestment describes a feedback loop in which inadequate capacity lowers service quality, drives customers away, and weakens the resources or apparent need for investment. The declining demand can hide the capacity problem that helped cause it.
management · systems theory↗
Mental Modelsintermediate
Guessing and Predicting
Guessing an unknown past fact and forecasting a future event both require estimates from incomplete information. Taleb uses the comparison to warn against expressing more certainty than the evidence supports.
economics · psychology↗
Mental Modelsintermediate
Guidelines for Enrollment and Commitment
Enrollment and commitment cannot be forced; they require genuine enthusiasm and freedom of choice. To foster enrollment, one must be enrolled themselves, be honest, and allow others to choose freely.
psychology · sociology↗
Mental Modelsintermediate
Guiding Ideas
Guiding ideas are not static statements but dynamic tools for mobilizing energy and shaping organizational culture. Effective design prioritizes engagement over precision, takes time, and judges ideas by their impact on decisions.
business · education↗
Mental Modelsintermediate
Guilty or Innocent
Taleb argues that long-surviving natural processes deserve a presumption of robustness, placing the burden of evidence on those who propose to alter them. This is his rule for managing uncertainty about interventions.
science · philosophy↗
Mental Modelsbeginner
Half Truths Are Not Whole Truths
Be wary of partial truths presented in persuasive messages, as they can be more dangerous than outright lies by omitting context and selecting favorable evidence.
politics · business↗
Mental Modelsbeginner
Half-Full/Half-Empty Perspective
The same situation can be viewed two contrasting ways depending on the reference point (starting full vs. starting empty), illustrating how history and framing shape perception.
business · education↗
Mental Modelsintermediate
Hammurabi
Taleb uses Hammurabi’s builder-liability rules to argue that people who create risks should share the downside. He pairs this incentive argument with a second principle: preserve redundancy and a margin of safety.
politics · ethics↗
Mental Modelsintermediate
Hammurabi's Code (Skin in the Game)
Hammurabi's code, dating back 3,800 years, established symmetries between parties to prevent hidden tail risks, such as a builder being held accountable for a collapsed house. This concept underlies the principle of skin in the game and is contrasted with modern financial practices where risk-takers can escape consequences.
politics · law↗
Mental Modelsintermediate
Handling Blue Personalities in Urgent Situations
Erikson describes Blue personalities as careful workers who may become more deliberate under pressure. His advice is to explain the deadline, agree on priorities, and give concrete reasons for changing pace.
business · education↗
Mental Modelsbeginner
Hang Around Him Constantly
Individuals with a 'Green' personality type require private space to think and recharge; without it, they become stressed and unable to function mentally.
psychology↗
Mental Modelsintermediate
Hanlon's Razor
Hanlon’s Razor asks us to consider error, ignorance, or misunderstanding before attributing a harmful action to malice. It can help test an assumption about intent while leaving room for evidence of deliberate harm.
politics · history↗
Mental Modelsintermediate
Happiness as a By-Product of Meaningful Work
Senge argues that meaningful goals, valued working relationships, and time to reflect can support both satisfaction and performance. The practitioner accounts illustrate his view that happiness may arise from worthwhile work, without establishing that one set of practices guarantees either happiness or exceptional results.
education · psychology↗
Mental Modelsintermediate
Has the Thinking and Level of Discussion About Strategic and Endemic Problems Got to the Right Level?
Complex problems require systems-based analysis to understand underlying causal factors; treating them as merely complicated leads to frustration. There is a tendency to focus on tangible threats rather than root causes across domains.
politics · education↗
Mental Modelsintermediate
Have Ethics to Drive and Police Yourself
Munger argues that firms should refuse some actions even when they are legal. A code of ethics gives people a standard against which to judge their conduct beyond the minimum required by law.
education · business↗
Mental Modelsintermediate
Have Your Cake and Eat It Too – But Not at Once
Many apparent dilemmas are artifacts of 'snapshot' thinking; by adopting a process view over time, seemingly contradictory goals can be achieved sequentially rather than as immediate trade-offs.
management · psychology↗
Mental Modelsbeginner
Head and Face
Facial expressions and head movements (nodding, shaking, leaning, etc.) use 43 muscles to nonverbally communicate emotions, attitudes, and attention levels during social interactions.
communication · sociology↗
Mental Modelsintermediate
Helenus and the Reverse Prophecies
Taleb uses Helenus’s ability to predict the past as an analogy for gaps in historical knowledge. Reconstructing an outcome requires evidence that may be missing, even when a retrospective story sounds convincing.
history · philosophy↗
Mental Modelsintermediate
Herb, Alice, and Hal, the Baby
Genes should be viewed as abstract informational entities, not just DNA molecules, analogous to how Shakespeare's play 'Hamlet' is not made of ink but is an abstract pattern that can be embodied in different media.
science · philosophy↗
Mental Modelsintermediate
Heroes Were Not Library Rats
Taleb argues that learning courage requires practice and contact with people who have taken risks. He recommends reading original texts and writers with practical experience, and warns that academic knowledge of courage can remain detached from action.
education · business↗
Mental Modelsintermediate
Heterogeneity in the Population Explains Many Phenomena
Population averages can hide differences that matter for policy and strategy. Examining groups with different costs, risks, or behavior can help explain health spending, disease transmission, customer demand, and admissions outcomes that an average alone misses.
healthcare · sociology↗
Mental Modelsbeginner
Hierarchical Organization of Life
Living things are organized into nested hierarchical levels, from cells and tissues to ecosystems and the biosphere. Understanding this organization reveals emergent properties and the coherence of biological systems.
systems thinking · science↗
Mental Modelsintermediate
Hierarchy of Dominant Ideas
Dominant ideas can be identified at different levels of comprehensiveness, from specific aspects to entire subjects. The hierarchy extends from more specific to more general ideas, and the choice depends on what seems to dominate the issue for the individual.
business · education↗
Mental Modelsintermediate
Hierarchy of Ideas
The hierarchy of ideas describes levels of explanation, from particles and physical processes to organisms, societies, and concepts such as beauty. A useful explanation works at the scale of the question. Moving between levels can reveal connections or show why an otherwise accurate description does not help solve the problem.
education · sociology↗
Mental Modelsbeginner
HiFi Information Reveals Better Options
Reports can lose details that matter to a decision. High-fidelity information comes from examining conditions firsthand or asking a trusted observer to investigate what the reports leave unexplained.
military · decision_science↗
Mental Modelsintermediate
High-Viscosity Communication Environment
Bureaucratic or cultural barriers can slow communication even when information is useful. The source uses the Soviet Union as an example of a setting with barriers to information exchange.
communication · sociology↗
Mental Modelsintermediate
Hilbert's Hotel Paradox
Hilbert's Hotel is a thought experiment demonstrating that an infinite set can accommodate additional elements even when 'full', highlighting counterintuitive properties of infinity.
philosophy · mathematics↗
Mental Modelsbeginner
Hippocratic Theory of the Four Temperaments (Four Humors)
The historical four-humors theory associated health and temperament with blood, yellow bile, black bile, and phlegm. It linked these fluids to sanguine, choleric, melancholic, and phlegmatic temperaments.
medicine · history↗