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From Eternity to Here: The Quest for the Ultimate Theory of Time

Sean M. Carroll · 2010 · Dutton / Penguin

Spiritual Evidence Map/Last updated May 10, 2026/Claims v1.0.0-provisional/Sources v1.0.0/Scores provisional

Summary

Popular-but-rigorous treatment of the arrow of time, the past hypothesis, and the Boltzmann-brain problem in the context of long-term cosmology.

Why it matters here

The most accessible book-length introduction to why physicists worry about the Boltzmann-brain problem and how it interacts with the arrow of time.

Linked claims

Evidence score 1/10

Boltzmann brains

In a long-lived, accelerating universe, random thermal fluctuations could spontaneously assemble a self-aware brain with false memories of a coherent life. Several modern cosmological models appear to predict such observers should statistically dominate — which is widely treated as a reason those models are wrong, not as evidence about you.

Related evidence hubs

Topic hub

Reality & Time

Physics-adjacent worldviews — block universe, many-worlds, simulation, free will.

Evidence pillar

Physics-adjacent worldview theories

Many-worlds, simulation, mathematical universe.

Evidence pillar

Skeptical frameworks

Cryptomnesia, anoxia models, cold reading. Counter-anchors.