Mental Model
Upper Confidence Bound
An algorithm for the explore-exploit dilemma that balances choosing the best-known option (exploit) with trying uncertain options that might be better (explore)
The encyclopedia
People, books, and breakthrough ideas—connected to the mental models and moves you can use.
Explore the encyclopedia
3,456 entries
Cognitive Move
UpSet
Handles four sets or more, where circles give up. Each combination that actually occurred becomes one bar whose height is its size, and a dot matrix underneath says which sets that bar combines. Reading it is reading a bar chart, so it stays legible at eight or 10 sets, where a Venn would be a puzzle.
Cognitive Move
Upstream
Step one link backward from whatever you're blaming and ask what feeds it: who supplies its inputs, sets its deadlines, hands off work to it. Bad or late inputs cause failures the actor itself could never have prevented.
Mental Model
Urn Models
Urn models represent sampling through explicit initial contents and replacement or reinforcement rules
Cognitive Move
Use Safe Social Support
Ask one trusted, safe person for one specific role, like quiet presence or holding your options, to restore the mental function you can't run alone.
Mental Model
Using Lay Audiences as Decoys
Experts explain their positions to willing nonexperts while fellow experts listen, making detailed explanation socially comfortable and exposing omitted premises
Mental Model
Utilitarian Calculus (Bentham & Mill)
Utilitarian calculus evaluates actions by their consequences: the morally right action is the one that produces the greatest total well-being for the greatest number of people
Mental Model
Utilitarianism
Utilitarianism assesses actions or rules through consequences for wellbeing, counting affected interests impartially
Mental Model
Utility (Marginal, Diminishing, Increasing)
Utility represents preferences or satisfaction in an economic model
Mental Model
Vacation Effect on Creativity
Extended breaks from work produce measurable increases in creative output, but only under specific conditions
Mental Model
Valley of Death (Innovation Funding Gap)
An innovation funding gap can arise while an invention is being developed into a commercially credible offering
Mental Model
Value at Risk (VaR)
A statistical measure estimating the maximum expected loss over a specific time period at a given confidence level
Mental Model
Value of Information
Value of information measures expected improvement from choosing after additional information within a specified decision model
Mental Model
Value of Perfect Information
The theoretical maximum you should pay to eliminate uncertainty before deciding—calculated as the difference between expected value with perfect information and expected value with current information
Cognitive Move
value stream
The steps in order, plus a measurement of the gaps between them. Time inside a box is time something is actually changing. Time between boxes is waiting. Drawing both to one scale usually shows a stream that is mostly gap, which moves the question from how to make each step faster to why the waits are there at all.
Mental Model
Values
The explicit or implicit principles that guide an organization's decisions when trade-offs arise
Mental Model
Values Alignment Check-In Protocol
A periodic self-assessment protocol for measuring the gap between your stated values and your actual behavior, then making concrete adjustments
Mental Model
Values Clarification Framework
Values clarification, rooted in the work of Sidney Simon and later refined by Acceptance and Commitment Therapy (ACT), is the systematic process of identifying, prioritizing, and committing to the principles that define…
Mental Model
Variability in Judgment
Kahneman's finding from 'Noise' that professionals making the same judgment about the same case produce alarmingly different conclusions—and the variability is far greater than anyone expects
Mental Model
Variation or Six Sigma
Variation management distinguishes variability that impairs a requirement from deliberate variation that supports learning
Mental Model
Varnashrama Dharma (Life Stages Framework)
The ashrama system divides life into four stages with distinct purposes: Brahmacharya (student, ~12-25: learning and discipline), Grihastha (householder, ~25-50: career, family, wealth creation), Vanaprastha (forest-dwel…
Mental Model
Vasudhaiva Kutumbakam (The World as Family)
From the Maha Upanishad: 'For those who live magnanimously, the entire world constitutes but a family.' The capacity to extend family-level care beyond biological kin is both possible and the marker of ethical maturity
Mental Model
Veil of Ignorance
Rawls's veil of ignorance withholds knowledge of one's particular position within the original position for choosing social principles
Mental Model
Velocity
The rate of change of position with respect to time, including both SPEED (magnitude of motion) and DIRECTION