MODELS
Menu

The encyclopedia

People, books, and breakthrough ideas—connected to the mental models and moves you can use.

Explore the encyclopedia

3,456 entries

Mental Model

Learned Helplessness Pattern (Extended)

Martin Seligman's original finding—that organisms exposed to inescapable adverse conditions stop trying even when escape becomes possible—extended to its subtle manifestations in modern life

Cognitive Move

Learning objective

Set the goal as knowledge gained rather than output produced. You succeed when you can say which method works and why, backed by tests you ran. Choose it when a result is demanded but the working mechanism is still unproven.

Cognitive Move

Learning or exploration

A destination whose product is decision-relevant information rather than immediate performance.

Mental Model

Learning Progression Maps

A learning progression map visualizes how competence develops in a domain, showing the sequence of concepts, skills, and thresholds from novice to expert

Mental Model

Lectio Divina Method

Lectio Divina ('divine reading') is a structured contemplative reading practice from the Benedictine monastic tradition, dating to the 6th century

Cognitive Move

ledger

Dated entries, each a change, with a running total in the last column. The discipline is that the total must reconcile against something outside the ledger. When it does not, the gap is not an annoyance, it is the finding, and it tells you exactly which entry to go look at.

Cognitive Move

Ledger

Keep one running page that carries current status forward: what is open, what changed, what you decided, and the next action. Unlike a checklist of tasks, it records accumulated state over time so you can resume mid-stream without rebuilding context.

Mental Model

Left-Hand Column Technique

Chris Argyris's exercise where you write what was actually said in a conversation in the right column and what you were thinking but didn't say in the left column

Mental Model

Legacy Letter Framework

A legacy letter (also called an ethical will) is a structured document that transmits values, life lessons, hopes, and blessings to loved ones — distinct from a legal will that transfers assets

Mental Model

Legacy System Trap

The pattern where a system that was once fit for purpose becomes an increasingly expensive liability but cannot be replaced because too many other systems depend on it

Mental Model

Legal Realism vs. Formalism

Legal formalism holds that law is a self-contained system of rules that can be applied logically to produce correct answers—the judge simply finds the relevant rule and applies it mechanically

Mental Model

Legal Reasoning by Analogy

Legal reasoning by analogy is the core method of common-law thinking: a court decides a current case by identifying a relevantly similar past case (precedent), extracting the principle that governed the prior decision, a…

Mental Model

Legal Risk Matrix

Practicing lawyers perform continuous risk assessment that maps legal exposure across two dimensions: probability of an adverse outcome and magnitude of consequences

Cognitive Move

legal-move map

Only your current state, and a fan of the moves open from it. Everything not reachable in one step is dimmed or left off the page. Each arrow carries the condition that makes it available. This is the version for deciding what to do this week, because it answers the question you actually have, which is what is on the table now rather than what the whole system is capable of.

Cognitive Move

Legends

Write down, in ordinary words, what every symbol and arrow in your notation stands for, and keep that key visible beside the work. It is the decoder that lets you, or anyone else, read the compressed page months later without guessing.

Mental Model

Legibility (James C. Scott)

Scott's insight that states and large organizations must make complex realities 'legible'—simplified and standardized enough to be measured, managed, and controlled from above

Cognitive Move

Levels to rates

Measure how fast something is changing and in which direction, not where it currently stands. A low score climbing steadily is a different problem than a high one sliding, though a single snapshot scores them the same.

Mental Model

Leverage

Mechanical leverage changes force and distance through geometry without creating energy

Mental Model

Leverage (Negotiation)

The relative power each party has in a negotiation, determined primarily by four factors: (1) alternatives (BATNA—your best option if this deal falls through), (2) information asymmetry (knowing something the other side…

Cognitive Move

Leverage and controllability

Two tests, both required. First, does the move touch the structure actually holding the outcome in place, rather than a visible symptom of it? Second, can you personally change that structure, or does someone else hold the switch?

Mental Model

Leverage Points

Donella Meadows's framework identifying the places in a complex system where a small intervention can produce large, lasting change