The irreducible epistemic atoms underlying the curriculum. 4,828 atoms across 8 types and 2 molecules
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