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

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Cognitive Move

Rules

Generate a new option by changing the constraints, dependencies, or exit conditions attached to it.

Mental Model

Rules and Filters

Pre-established criteria for filtering information, opportunities, and decisions—created when calm and rational so they're available when stress, emotion, or urgency impairs judgment

Mental Model

Rumsfeld Matrix (Known/Unknown)

The epistemological framework distinguishing four categories of knowledge: known knowns (things we know we know), known unknowns (things we know we don't know), unknown unknowns (things we don't know we don't know), and…

Mental Model

Rumsfeld’s Rule

The epistemological framework distinguishing four categories of knowledge: known knowns (things we know we know), known unknowns (things we know we don't know), unknown unknowns (things we don't know we don't know), and…

Cognitive Move

Runway

Time bought with money or reduced obligations, so you can wait for a better offer, refuse a bad one, or test something unpaid. It adds no new capability. It buys freedom to use the capability you already have.

Mental Model

Rupture and Repair Cycle

Rupture and repair describes recognizing a disruption in connection or collaboration and attempting to address its impact through acknowledgment, responsibility, and changed behavior.

Mental Model

Rupture and Repair Cycle in Relationships

Every close relationship — romantic, parental, professional, therapeutic — involves inevitable ruptures: moments of misattunement, disconnection, hurt, or failure

Mental Model

Rupture and Repair in Therapeutic Relationships

Rupture and repair is the process whereby a breakdown in the therapeutic alliance — a misunderstanding, a moment of disconnection, a therapist's error, or a client's withdrawal — is recognized, addressed, and resolved, o…

Cognitive Move

S — Same-shaped

You may think you have many options, but if they all work through the same underlying mechanism, you really only have one.

Cognitive Move

S-curve

One line that starts slow, steepens, then flattens against a ceiling. The value is in naming which of the three stretches you are standing in. A flat early stretch and a flat late stretch look identical week to week and mean opposite things, and the ceiling line is what tells them apart.

Mental Model

S-Curve

The characteristic shape of growth in most natural and business systems: slow initial growth (struggling for traction), rapid exponential growth (hitting product-market fit), then gradual deceleration and plateau (market…

Mental Model

S-Curve of Innovation / Technology

An S-curve is a pattern of initial slow change, acceleration, and later slowing that can describe some technology-performance or adoption histories

Mental Model

Sabbath Practice Model

The Sabbath practice prescribes a regular, non-negotiable period of complete disengagement from productive activity—historically one day per week, but applicable at multiple time scales (daily shutdown rituals, weekly re…

Cognitive Move

Sacred Activity Check

Ask whether measuring an intrinsically valuable activity would improve it or replace its point, and protect what shouldn't be scored.

Mental Model

Sacred Canopy Theory (Berger)

Peter Berger's sacred canopy theory, from his sociology of knowledge, describes how human societies construct overarching meaning systems—'sacred canopies'—that provide cosmic order, explain suffering, legitimate social…

Cognitive Move

Safe and sustainable trajectory

Look past this quarter's output at what the arrangement is doing to people and to your future room to move. Ask whether anyone is losing skill, privacy, autonomy, or standing, whether the setup survives a bad week, and whether you can still change course.

Cognitive Move

Safeguard

Protect the invariants while you act: consent, real danger and medical boundaries, essential constraints, and the strongest rival explanation.