{"id": "card_thermo_second_law", "kind": "reference", "title": "The second law — entropy increases, the arrow, the one end", "body": "Entropy of an isolated system never decreases. The microscopic laws are time-reversible; this is where irreversibility enters - the arrow of time. Of the vast many microstates almost all flow to the one maximum-entropy macrostate: many possibilities, the same end, as a law. The one-way geometry itself (the Tesla valve). Rests on the capstone.", "source": {"label": "Narrow Highway — thermodynamics", "url": "", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "thermodynamics", "bands": ["thermodynamics", "pillar", "second_law", "one map"], "subject": "The second law — entropy increases, the arrow, the one end", "connections": [{"to_card_id": "card_floor_thermodynamics", "relationship": "part_of", "evidence": "a law of thermodynamics (The second law)"}, {"to_card_id": "card_floor_the_capstone", "relationship": "connects_at", "evidence": "the second law is the one-way flow to the one end - 'many possibilities, the same end'"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.thermodynamics", "facets": {"subject": ["one map", "pillar", "second_law"]}, "presentation": {"glyph": "•", "kind_label": "thermodynamics", "by": "Narrow Highway — thermodynamics", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_floor_thermodynamics", "title": "Thermodynamics — the arrow and the one end", "relationship": "part of", "why": "a law of thermodynamics (The second law)", "href": "/card/card_floor_thermodynamics", "resolved": true}, {"id": "card_floor_the_capstone", "title": "The capstone — one source, many potentials, one end", "relationship": "connects at", "why": "the second law is the one-way flow to the one end - 'many possibilities, the same end'", "href": "/card/card_floor_the_capstone", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_thermo_second_law", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_thermo_second_law"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}