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The Dissenter
#1032 Craig Callender: The Physics of Time
Dec 13, 2024
Craig Callender, Tata Chancellor's Professor of Philosophy at UC San Diego, dives deep into the nature of time. He challenges the conventional view of time as a flowing entity, discussing the spacetime continuum and the complexities of how we perceive time. Callender examines the interplay between physics and metaphysics, addressing big questions raised by quantum mechanics. Additionally, he explores the evolution of time perception across species, emphasizing how sensory processing influences our understanding of reality.
48:03
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Quick takeaways
- The intuitive human model of time, while practical for survival, contrasts sharply with the physics concept of time existing within a four-dimensional continuum.
- The directionality of time as perceived by humans is often misleading, as physical laws allow for time-reversal in certain phenomena.
Deep dives
Manifest Time and Its Misconceptions
The common human perception of time, often described as manifest time, posits a distinct present that separates a fixed past from an open future. This intuitive model, however, does not align with the fundamental principles of physics, according to experts. Instead, physicists suggest that time does not possess a privileged status and that all moments exist within a four-dimensional manifold, challenging the conventional understanding of a flowing present. The notion that our sense of time is an accurate reflection of reality is, therefore, misleading in light of contemporary physics.
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