{"id": "card_mind_expensive_brain", "kind": "reference", "title": "The expensive brain — thought costs energy", "body": "The brain is about 2 percent of body mass but burns about 20 percent of resting energy (a ratio of 10, sealed). Awareness is paid for in glucose and oxygen - a steep local order bought with a larger disorder. Rests on thermodynamics and biology.", "source": {"label": "Narrow Highway — the mind", "url": "", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "the_mind", "bands": ["the mind", "pillar", "expensive_brain", "one map"], "subject": "The expensive brain — thought costs energy", "connections": [{"to_card_id": "card_floor_the_mind", "relationship": "part_of", "evidence": "a pillar of the mind (The expensive brain)"}, {"to_card_id": "card_floor_thermodynamics", "relationship": "connects_at", "evidence": "the brain's energy budget - a local order paid for by the second law"}, {"to_card_id": "card_floor_biology", "relationship": "connects_at", "evidence": "the brain is metabolizing tissue"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.the.mind", "facets": {"subject": ["expensive_brain", "one map", "pillar", "the mind"]}, "presentation": {"glyph": "•", "kind_label": "the mind", "by": "Narrow Highway — the mind", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_floor_the_mind", "title": "The mind — matter aware of itself", "relationship": "part of", "why": "a pillar of the mind (The expensive brain)", "href": "/card/card_floor_the_mind", "resolved": true}, {"id": "card_floor_thermodynamics", "title": "Thermodynamics — the arrow and the one end", "relationship": "connects at", "why": "the brain's energy budget - a local order paid for by the second law", "href": "/card/card_floor_thermodynamics", "resolved": true}, {"id": "card_floor_biology", "title": "Biology — life is self-replicating chemistry", "relationship": "connects at", "why": "the brain is metabolizing tissue", "href": "/card/card_floor_biology", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_mind_expensive_brain", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_mind_expensive_brain"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}