Tier 0 · The empirical floor
These are the empirically-established facts about human beings that the steamHouse architecture is built on. Everything in the framework is downstream of one of them. If a claim can’t be traced back to this layer, it doesn’t get in.
They are stated here in technical register — mechanisms named precisely, each anchored in the literature. The plain-language version, which names the lived reality rather than the mechanism, lives on the main site.
On the term
Bedrock is geological: it is what the survey finds at the bottom, where the soil and the foundations end. The architecture does not propose to move it — but bedrock maps revise when survey instruments improve, and so does this layer (see update discipline). The term was chosen to extend the corpus’s soil-and-foundation metaphor downward without colliding with its existing load-bearing uses of substrate and ground.
The nine facts
They are not derived from one another, and they were not chosen from a list. Each is annotated for what it constrains or makes possible at the architectural level, and anchored in one or two sources a careful reader can pull on. The anchors are not exhaustive.
Mind and body operate as a single integrated system. Cognition, emotion, and physiological state continuously shape each other; perception, thought, and feeling have observable physiological signatures and are produced by embodied processes throughout the nervous system.
What it does architecturally
Constrains the architecture against any developmental program that addresses cognition without affect or body, or affect without cognition or body. It is the empirical ground for the three-capacity organization (Heart, Head, Body) and for the commitment that the three develop together or develop crooked.
Anchors Damasio, Descartes’ Error (1994) & The Feeling of What Happens (1999); the somatic-marker hypothesis. Barrett, How Emotions Are Made (2017). Lakoff & Johnson, Philosophy in the Flesh (1999).
Humans cannot develop human capacities in isolation. The capacities that constitute personhood — self-recognition, theory of mind, emotional regulation, language acquisition, conscience formation — develop through relationship with other humans. Severe relational deprivation produces predictable developmental damage.
What it does architecturally
Makes the club a structural necessity rather than a programmatic choice. It grounds the commitment that the unit of development is not the individual but the individual-in-relationship, and underwrites mentors, the Care Space, and Mutual Respect as a condition of formation rather than a value to be taught.
Anchors Vygotsky, Mind in Society (1978) & Thought and Language — higher cognitive functions internalized from social interaction. Tomasello, Becoming Human (2019) — shared intentionality. Rutter, the Romanian-orphan longitudinal work — what deprivation produces.
Humans have evolved cognitive architecture for in-group and out-group sorting that operates rapidly, often below conscious awareness, and that evolved under conditions of small-band sociality. This architecture continues to operate in modern environments that differ substantially from its evolutionary context.
What it does architecturally
Makes the supertribe move developmentally necessary rather than merely admirable. It grounds the treatment of tribal sorting as something to work with — recognized, examined, sometimes overridden — rather than denied or moralized about, and lets comfort tribes and supertribes be named as distinct topological structures rather than good/bad versions of the same thing.
Wording-care
The defended phrase is “cognitive architecture that operates,” not “behavior that is determined.” The architecture claim is well-supported in evolutionary psychology and social neuroscience; the strength-of-determinism claim is not. Phrasing at the level of apparatus that operates keeps the empirical claim defensible without overclaiming.Anchors Henrich, The Secret of Our Success (2016) & The WEIRDest People in the World (2020). Greene, Moral Tribes (2013).
Human cognition operates through multiple systems running at different speeds and at different levels of conscious accessibility. Some processes are automatic, fast, pattern-based, and largely inaccessible to introspection; others are slow, effortful, and consciously accessible. The fast system operates through learned patterns entrenched by repetition; the slow system can inhibit or override fast responses with effort, but typically does not unless conditions support it.
What it does architecturally
The empirical ground for the three-level consciousness model (Automatic / Conscious / Purposeful) — observable modes of operation, not invented levels. It also grounds the entire habituation architecture: the Agent-Habits stage, the Five Practices of Authorship, and the marker structure that takes habits seriously as developmental territory.
Anchors Kahneman, Thinking, Fast and Slow (2011). Stanovich, Rationality and the Reflective Mind (2011). Ericsson, Peak (2016) — deliberate practice. Chase & Simon (1973) — expert pattern recognition.
Humans have neurological apparatus — prefrontal-cortex-mediated executive function — that supports the capacity to inhibit automatic responses, deliberate among options, and select among them. This capacity develops across childhood and adolescence and varies across individuals and contexts.
What it does architecturally
The empirical ground for treating the decision as a unit of development, and for making Personal Agency a developmental commitment rather than a values claim. It also grounds the developmental sequencing: executive function develops late, which is why the four-stage architecture front-loads habits before higher-order authorship.
Wording-care
The defended phrase is “neurological apparatus that supports the capacity to inhibit, deliberate, and select.” The Libet/Schurger literature concerns whether the conscious experience of choosing is causally upstream of the choice — a real, unresolved question, but at a different layer than this fact claims. The capacity claim itself is not contested. The architecture’s stronger authorship moves happen at Tier 1, where they belong.Anchors Diamond, Executive Functions (2013, Annual Review of Psychology). Miyake et al., unity-and-diversity model (2000). Steinberg, adolescent executive-function development.
Humans care differentially based on proximity, kinship, and relationship history. The differential is shaped by both biological systems (kin-selection mechanisms, attachment systems) and cultural training (norms, practice). The biological substrate of differential care is well-established; the relative weights of biology and culture in any given case are not.
What it does architecturally
The empirical ground for the Care Space architecture — the concentric organization follows the structure of differential care humans actually exhibit. It also grounds the treatment of care expansion as a developmental achievement rather than a default: caring well across more of the rings is what development looks like, because the default is to care most about the inner ones.
Wording-care
The defended phrase is “the biological substrate of differential care is well-established; the relative weights of biology and culture in any given case are not.” Kin selection and attachment systems are well-established; how much of a specific human’s care patterns trace to biology versus culture is contested — and the honest phrasing acknowledges that without weakening the substrate claim.Anchors Hamilton, kin selection (1964, Journal of Theoretical Biology). Trivers, reciprocal altruism (1971, Quarterly Review of Biology). Bowlby / Ainsworth, attachment.
Human brains develop in identifiable phases from infancy through the mid-twenties. Cognitive, social, identity, and executive-function capacities unfold on biological timetables that interact with environmental input. Some capacities have sensitive periods; others remain developable across the lifespan.
What it does architecturally
The empirical ground for the four-stage developmental architecture (Agent-Habits, Artist-Tools, Hero-Ideals, Whole-Real Human) and the age bands. It grounds the treatment of timing: what is developable at age 10 differs from age 17, and the architecture has to honor that rather than treat development as one undifferentiated process.
Anchors Steinberg, Age of Opportunity (2014). Bronfenbrenner, The Ecology of Human Development (1979) and the later bioecological theory. Knudsen (2004) — sensitive periods.
Symbolic and narrative capacity is constitutive of human cognition, not a cultural addition to it. Humans construct meaning, identity, and shared understanding through symbolic and narrative structures — language, story, ritual, metaphor. The capacity develops on observable timetables across childhood.
What it does architecturally
The empirical ground for the Chronicles channel: humans understand themselves through story is a developmental fact, not a strategic choice. It grounds the treatment of identity as something authored rather than merely possessed — the four principles, the marker architecture, and the Reasoned/Authored split all rest on it: a being whose self is constituted in story can be invited to author rather than to obey.
Anchors McAdams, The Stories We Live By (1993) & The Redemptive Self (2006) — narrative identity. Bruner, Acts of Meaning (1990) — narrative as a primary mode of cognition.
Human brains are plastic. They reorganize in response to experience, practice, and environmental input throughout life. Some structural changes are more available in developmental phases (sensitive periods); others remain available across the lifespan. Skills, habits, emotional patterns, and cognitive structures develop through repetition and use.
What it does architecturally
The empirical ground for the commitment that formation is possible at all. Without plasticity, none of the Tier 1 commitments — developing the four principles, building markers, moving up the consciousness levels, expanding the Care Space — would make sense. It grounds the mentor practice, the emphasis on conditions over outcomes, and the treatment of failure as developmental input rather than permanent verdict.
Anchors Hebb, The Organization of Behavior (1949) — neurons that fire together wire together. Kandel, In Search of Memory (2006) — molecular basis of synaptic plasticity. Greenough, Black & Wallace (1987, Child Development) — experience-dependent vs. experience-expectant plasticity.
Update discipline
The architecture treats Tier 0 as bedrock — but bedrock maps revise when survey instruments improve. When the empirical literature in developmental psychology, cognitive science, evolutionary biology, or neuroscience updates a fact, the architecture updates with it, and every Tier 1 commitment resting on that fact has to revise too.
This is a real governance commitment, not a hedge. It gives the architecture a falsification mechanism: Tier 0 is in principle revisable by empirical work. And it gives the architecture a credibility move with researchers — the bedrock is held openly enough that a careful reader can interrogate it, and the architecture above it is honest about what it owes to which empirical claims.
The clean split
Several concepts that read, in plainer writing, as if they sat at the bedrock level are on careful reading architectural articulations of a Tier 0 fact rather than facts themselves. Keeping the split clean keeps Tier 0 empirical and keeps the architecture’s moves visible as moves — choices another developmental architecture might make differently while honoring the same facts.