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

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Mental Model

Explore Possible Solutions

The creative and analytical phase of generating MULTIPLE possible solutions to a well-defined problem before committing to one—deliberately expanding the solution space before contracting it

Mental Model

Explore/Exploit Tradeoff

The fundamental tension between exploiting what you already know works (refinement, optimization, execution) and exploring new possibilities (experimentation, innovation, learning)

Mental Model

Exponential Growth

A quantity changes by a constant proportion per equal interval, so successive absolute changes depend on a changing base.

Cognitive Move

External Reality Check

Include an observation you cannot easily manufacture, so self-deception gets exposed.

Mental Model

Externalities

Externalities are costs or benefits of an activity that affect others and are not fully reflected in the relevant decision-maker's incentives or compensation arrangements

Cognitive Move

Externalities

Ask who absorbs the costs your current frame does not bill anyone for. Not who feeds or consumes the work, but who quietly pays for it in overtime, rework, or damaged trust while sitting outside the box you drew.

Cognitive Move

Externalize

Move state you keep re-remembering out of your head and into a persistent artifact like a ledger, checklist, or state board.

Cognitive Move

Externalize

Move state or structure into a durable artifact while you still do the acting and deciding.

Mental Model

Extinction

Extinction is the loss of all living members of a taxon

Cognitive Move

Fact / state

Find out what is actually true, present, absent, or currently configured right now.

Cognitive Move

Fade

Once someone can reliably do the thing on their own, take the help away, keeping only a small safety net where a slip would be costly.

Mental Model

Fail-Safe

A design principle where system failure defaults to a safe state rather than a dangerous one

Mental Model

Failure Mode and Effects Analysis (FMEA)

FMEA is a systematic method for identifying all the ways a system, process, or product can fail, assessing the consequences of each failure mode, and prioritizing actions to prevent the most dangerous ones

Cognitive Move

Failure path

Decide in advance what happens when the normal route breaks. Name the deadline that counts as a stall, the person or backup process that takes over, how to undo a wrong move, and the emergency route when nobody answers.

Mental Model

Failure to Account for Base Rates

The persistent tendency to ignore the prior probability (base rate) of an event when evaluating new evidence—focusing on how well the evidence matches a scenario rather than how common the scenario is

Mental Model

Failure to See False Conjunctions

The broader cognitive failure of not noticing when detailed, specific stories are being treated as more probable than their component parts warrant—an extension of the conjunction fallacy into everyday reasoning

Mental Model

Fair Fighting Rules Protocol

A research-based protocol establishing ground rules for productive conflict in intimate relationships, focusing on the specific behaviors that predict whether a conflict strengthens or damages the relationship

Mental Model

Fallacy of the Single Cause

The cognitive error of attributing an outcome to one cause when it actually results from multiple interacting causes—oversimplifying complex causation into a simple story

Mental Model

False Cause

False-cause reasoning infers a causal relationship from association or sequence without adequate support for the causal step