Definitions
1,059 definitions · page 7 of 23
Goal
a cognitive object that exists as a written commitment with specific action, measurable outcome, and deadline, as opposed to an unexternalized mental impression that lacks specificity and is subject to cognitive limitations of working memory
Assumption
a cognitive premise that underlies a plan, decision, or belief, which exists implicitly in working memory until externalized and which, when left unexamined, can cause plan failure
Load-bearing assumption
an assumption that, if false, would cause a plan or decision to fail catastrophically, distinguished by both high importance and high vulnerability to being wrong
Assumption register
a written, persistent document that records all significant assumptions underlying a plan or decision, including their importance, uncertainty, validation status, and next actions for testing or monitoring
Identity-level goal
a goal that describes the kind of person one is becoming rather than just the outcome to be achieved, functioning as a self-concept model that serves as a decision filter
Commitment
a specific promise or agreement that, when unwritten, exists only in biological working memory and is vulnerable to structural failure from cognitive overload, while when externalized becomes a binding infrastructure visible, trackable, and resistant to drift between intention and action
Priority
a rank-ordered list of what matters most to an individual, which when internal exists only in fluctuating moods and contexts and is vulnerable to urgency bias, decision fatigue, and context-dependent retrieval, but when externalized becomes a stable reference point for decision-making and time allocation
Mental model
an internal representation of reality that mirrors the structure of external events and allows for anticipation of future outcomes, constructed through small-scale simulations that govern decision-making and filter perception
Externalized mental model
a mental model that has been rendered visible through spatial representation, making its entities, relationships, boundaries, and gaps explicit and inspectable rather than residing solely within consciousness
Blocker
an unnamed, unstructured obstacle that operates below the surface as a vague feeling of resistance, consuming cognitive resources, generating rumination loops, and preventing clear problem identification until it is explicitly named and externalized
Self-explanation
the cognitive process of actively generating explanations, connections, and questions about new information in your own words rather than passively consuming it, which leads to deeper understanding and mental model construction through the generation effect and elaborative interrogation mechanisms
Learning journal
a structured daily practice of writing about one thing you learned using a specific framework (claim, evidence, connection, question) that produces generative cognitive work rather than archival transcription, creating a compounding asset of durable knowledge through consistent externalization
Progress externalization
the practice of recording cognitive activities and outcomes in external systems to make invisible progress visible, reliable, and actionable, thereby countering internal cognitive distortions that make progress seem stagnant or insignificant
System documentation
the explicit, written description of the decisions, triggers, cadences, and routing rules that determine how information flows through a personal knowledge management system, distinguishing it from mere tool inventory or implicit habits
Extended mind
a cognitive system where external artifacts, tools, and social structures functionally distribute cognitive processes and constitute genuine parts of cognition itself when they play the same functional role as internal processes, rather than merely containing or storing information
A schema
a mental model that has been externalized, named, and structured so it can be examined, tested, and improved — turning invisible cognitive habit into visible cognitive infrastructure
Schema inspection
the process of surfacing, naming, writing down, and evaluating mental models to determine whether they actually serve you, requiring externalization through writing to make invisible schemas visible and subject to evaluation
Map-territory relation
the structural relationship where schemas are compressed representations of reality that necessarily discard information, with the compressed representation being structurally similar to the territory (making it useful) but never identical to it (making it incomplete)
Epistemic humility
the operational stance of actively calibrating confidence to evidence strength, acknowledging the limits of one's knowledge, and maintaining awareness of schema boundaries and specific wrongness
Schema awareness
metacognitive awareness applied to one's own interpretive frameworks, specifically the capacity to observe schemas operating in real-time without conscious consent, bringing them into the global workspace of conscious access for evaluation and potential modification
Schema blindness
the systematic inability to detect schemas operating in one's own thinking due to their operation below the threshold of conscious access, making them invisible to introspection while remaining obvious to external observation
Schema competition
the process by which multiple schemas simultaneously activate in response to a situation and compete for dominance in shaping perception, emotional response, and behavior, with the winning schema determining the outcome regardless of accuracy
Default schemas
the automatic, unconscious cognitive frameworks that operate below the threshold of conscious deliberation to evaluate people, interpret situations, predict outcomes, and decide what deserves attention, which produce conclusions that feel like direct perceptions of reality rather than products of interpretation
Schema
a mental model or framework that organizes and interprets information, including the implicit assumptions, patterns of thinking, and cognitive grooves that are activated when specific words or concepts are used, which can be encoded in language, shaped by experience, and resist change even in the face of contradictory evidence
Schema inertia
the structural tendency of established mental models to persist even when the evidence that created them has been discredited, contradicted, or destroyed, characterized by the asymmetry between assimilation (cheap) and accommodation (expensive), and defended through confirmation bias mechanisms
Schema shock
the moment when your mental model of how something works meets undeniable evidence that it doesn't work that way
Disequilibrium
the cognitive discomfort of a model that no longer works, which serves as the necessary precondition for accommodation—the process of restructuring a schema to account for new information
Warranted confidence
the epistemically honest recognition that a schema is valid only within its tested conditions, with explicit acknowledgment of the domain boundaries where validation has not occurred
Ubiquitous language
a shared schema between developers and domain experts where every term used in conversation, documentation, and source code means the same thing to everyone involved, ensuring alignment on conceptual meaning rather than just terminology
Schema literacy
the ability to look at another person's behavior, arguments, decisions, and reactions — and reverse-engineer the underlying model that produces them, such that you could articulate it back to them and they would recognize it as accurate
Cognitive perspective taking
the ability to infer another person's thoughts, beliefs, reasoning structures, and interpretive frameworks, as opposed to merely feeling what they feel (affective empathy)
Cognitive inertia
the tendency to maintain current interpretive frameworks and process new information through existing schemas rather than updating those frameworks, even when confronted with contradictory evidence
Load-bearing assumptions
early design decisions or foundational beliefs that a system or organization depends on so completely that removing them requires rebuilding everything constructed on top of them
Schema construction
the active, deliberate skill of creating, inspecting, testing, and revising explicit organizational structures that govern how knowledge is perceived, processed, and applied in specific domains
Classification
the cognitive process of carving reality into categories that determine what you group together, what you separate, and how you respond to information.
Constructed categories
classification systems that are built by humans for specific purposes rather than discovered as natural features of reality, with each category serving a particular function and creating feedback loops that change the behavior of those classified.
Explicit categories
named and defined classification systems that exist as objects in a system you can inspect, debate, test, and version, as opposed to implicit categories that exist only in intuition and shift with emotional state
Binary categories
classification systems that divide phenomena into exactly two buckets, reducing multi-dimensional information to a single bit of information (zero or one, yes or no, in or out), which destroys information during the process of understanding
MECE
a classification system that eliminates both overlap (mutual exclusivity) and gaps (collective exhaustiveness) such that every item belongs to exactly one category and every possible item has a category.
Type system
a set of rules that assigns a property called a 'type' to every object in a system, then restricts which operations are valid for each type, making certain categories of error structurally impossible rather than detectable after the fact.
Classification debt
the compounding cost of lazy, inconsistent, or outdated categorization that accumulates silently and exponentially increases cleanup cost over time
Reclassification
the process of changing how you categorize things as a sign of learning and cognitive growth, not inconsistency or failure, occurring when existing categories no longer adequately serve current understanding or when the domain has evolved beyond the categories' capacity
Accommodation
the cognitive process of modifying existing schemas to handle experience that resists assimilation, which is equivalent to reclassification and represents the mechanism of cognitive growth rather than mere maintenance of existing categories
Prototype-based categories
cognitive categories organized around central exemplars rather than strict definitional rules, where membership is graded from typical to atypical and categories are structured with a center that processes fastest and measures everything else against
Boundary cases
items that do not fit neatly into any category and expose weaknesses in classification systems, serving as diagnostic signals rather than exceptions to be ignored
Cross-cutting categories
multiple independent dimensions applied to the same items simultaneously, allowing each item to belong to multiple categories and enabling complex queries that cut across dimensions
Dimensional poverty
the failure mode of classifying items along only one dimension and treating it as sufficient, preventing the system from answering questions that cut across multiple dimensions
Dimensional overload
the failure mode of creating so many cross-cutting categories that the classification system becomes more complex than the collection it organizes, with maintenance cost exceeding retrieval benefit