Defending Bayes, Part 4

Summary

Short post connecting indexical uncertainty (Yudkowsky) with timeline uncertainty. Yudkowsky: “Only true randomness/irreducible uncertainty = standing in multiple places, unable to tell who you are (indexical uncertainty).” Connection: In QBU, indexical uncertainty = timeline uncertainty—uncertainty about which branch you’re on. Two framings, same phenomenon: (1) “Who am I / which location?” (indexical), (2) “Which timeline am I on?” (QBU). Examples: Sleeping Beauty, Schrödinger’s cat, simulation hypotheses. Implication: Quantum randomness = self-location uncertainty across branches, not ontological indeterminacy. Enhances quantum decision theory interpretation. Brief but conceptually important bridge between rationalist discourse (LessWrong) and QBU framework.

Tags

• epistemology
• quantum
• qbu-framework
• probability
• bayesianism
• rationality
• sequence

Cross-References

• Backward: Defending Bayes, Part 3
• Forward: Defending Bayes, Part 5
• Related: Yudkowsky/LessWrong, anthropic reasoning

Notes

• Short bridging post
• Connects rationalist community (EY) to QBU
• Indexical = timeline (key insight)
• Sets up anthropic applications