Summary

Responds to Carlos De la Guardia’s question: “Do ideas push atoms, or atoms push ideas?” Answer: Both—brains evolved so semantic causation (ideas → ideas) aligns with atomic causation (atoms → atoms). Rigorous causality (QBU definition): Event A causes B iff (1) ancestor-descendant relation (all B-timelines share A-ancestor), (2) counterfactual dependence (remove A → remove B). Application: Ideas = neural patterns = atomic configurations. Idea A → Idea B satisfies: (1) B’s atomic patterns require A’s atomic patterns as ancestor, (2) remove A’s pattern → B’s pattern doesn’t occur. Therefore: Ideas rigorously cause atomic events. Analogy: Software controls hardware (moves electrons/atoms); similarly, ideas control brains. Importance: Clarifies cross-level causation; not metaphorical but formally rigorous. Enriches understanding of consciousness, decision-making, agency.

Tags

Cross-References

  • Related: Levels of description, emergence

Notes

  • Responds to Twitter discussion
  • Applies formal causality to mind-body problem
  • Software/hardware analogy (accessible)
  • Semantic-physical alignment = special property of brains