Concepts
The irreducible epistemic atoms underlying the curriculum. 4,828 atoms across 8 types
Open-Loop Cognitive Cost (Zeigarnik)
Unresolved cognitive commitments — uncaptured thoughts, unfinished tasks, unexternalized plans — consume working memory as persistent background processes until completed or externalized to a trusted system.
Context-Dependent Memory Encoding
Memory retrieval is context-dependent, with recall performance varying systematically based on environmental and emotional state matching between encoding and retrieval contexts.
Extended Cognition Thesis
Cognitive processes can be functionally distributed across external artifacts, tools, and social structures rather than contained solely in individual brains, with external processes constituting genuine parts of cognition itself when they play the same functional role as internal processes.
Automatic Narrative Generation Precedes Conscious Evaluation
Human brains automatically generate causal narratives and explanatory stories between sequential events before conscious evaluation engages, producing fast but often inaccurate causal inferences that arrive in consciousness pre-packaged as facts rather than hypotheses.
Directed Attention as Depletable Resource
Human focused attention and deliberate cognitive processing draw from a finite biological resource that depletes with sustained use across all acts of executive function (decision-making, self-control, effortful processing) and cannot be restored through willpower alone, requiring specific recovery conditions including rest, nature exposure, or low-demand automatic processing.
Perception as Predictive Construction
Perception is active predictive construction shaped by expectations and constrained (not determined) by sensory input; the brain continuously minimizes prediction error by either updating its internal model or filtering incoming data to match existing expectations.
Hindsight Bias and Calibration Necessity
Memory reconstructs rather than faithfully stores prior beliefs, systematically shifting them toward alignment with known outcomes (hindsight bias), making genuine learning from unrecorded predictions impossible and requiring external calibration systems to align subjective confidence with objective accuracy.
Habits as Context-Response Associations
Habits form when repeated behavior in stable contexts produces rewards, creating automatic context-response associations that trigger behavior without conscious deliberation.
Two-Level Metacognitive Architecture
Metacognition consists of two functionally distinct levels: an object level where cognitive processes occur and a meta level that monitors those processes through upward signals and regulates them through downward control.
Illusion of Explanatory Depth
Human self-assessment of understanding is systematically unreliable and inflated until forced to articulate or explain in detail—the gap between felt understanding and ability to generate explanations is diagnostic of confusion masquerading as comprehension.
Expertise Transforms Perceptual Chunking
Expertise fundamentally changes the size and nature of perceptual chunks—experts automatically perceive larger meaningful patterns as single units, enabling them to work with more complex information within the same working memory constraints.
Linguistic Structuring of Thought
Language and verbal labels actively structure and constrain the boundaries of deliberate thought, where assigning labels to concepts changes how those concepts are cognitively processed and what distinctions become salient.
Automatic Fusion of Observation and Interpretation
Humans automatically and unconsciously fuse observation with interpretation in sub-second timeframes, making the phenomenological separation of raw perception from inference cognitively effortful and often impossible without deliberate training.
Complementary Learning Systems Architecture
The hippocampus encodes new memories rapidly using sparse pattern-separated representations while the neocortex learns slowly through overlapping distributed representations; this complementary architecture prevents catastrophic interference where rapid neocortical learning would cause new memories to overwrite existing ones.
Cognitive Dissonance Drives Information Avoidance
Humans experience genuine psychological distress when holding contradictory beliefs (cognitive dissonance) and will actively avoid information that contradicts their existing self-concept to maintain consistency.
Dual Coding Theory: Verbal and Visual Channels
Information processing occurs through two independent cognitive channels—verbal/linguistic and nonverbal/imagistic—with human visual memory capacity for images vastly exceeding verbal memory capacity, while spatial relationships resist accurate sequential text representation.
Conversational Memory Asymmetry From Production Planning
During conversation, working memory bandwidth splits between comprehension and production planning, causing people to retain their own contributions more accurately than their partner's and exhibit systematically poor recall for information presented immediately before their turn to speak.
Ultradian and Circadian Cognitive Rhythms
Human cognition operates in ultradian cycles of arousal (approximately 80-120 minutes of higher capacity followed by a recovery period) nested within circadian rhythms (24-hour cycles), creating predictable multilevel variation in cognitive capacity, with optimal performance for different cognitive tasks occurring at different phases of these biological cycles.
Attention as Gate to Conscious Perception
Attention is capacity-limited such that focus on selected stimuli creates perceptual blindness to unattended information, even when that information is salient and within the sensory field; conscious perception requires directed attention as a necessary precondition.
Subcortical Fast-Pathway Threat Processing
The amygdala processes threat-relevant stimuli via a fast subcortical pathway, enabling automatic evaluative responses within approximately 300 milliseconds before conscious cortical processing and identification can complete.
Neural Plasticity Enables Lifelong Automatic Learning
Adult human brains retain the capacity to reorganize neural pathways throughout life in response to changes in input and behavior, automatically detecting and extracting statistical regularities from repeated input without conscious instruction.
Patterns Exist in Hierarchical Logical Levels
Patterns exist in hierarchical levels across multiple scales, with higher-order patterns (patterns of patterns) representing different logical types than first-order patterns and requiring meta-level cognitive observation to detect, forming causal chains where deeper structures generate surface events.
Expertise Through Deliberate Practice
Expertise develops through deliberate practice that builds sophisticated mental representations and enables perceptual differentiation of domain-specific features that untrained observers cannot detect.
Goals as Perceptual Filters
Goals function as perceptual filters that determine relevance by defining signal-detection criteria before information reaches conscious awareness, making relevance a goal-relative property rather than an intrinsic feature of information.