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Rovelli tears down these assumptions one by one, revealing a strange universe where at the most fundamental level time disappears.

We think of it as uniform and universal, moving steadily from past to future, measured by clocks. We all experience time, but the more scientists learn about it, the more mysterious it remains. For most readers this is unfamiliar terrain. Why do we remember the past and not the future? What does it mean for time to "flow"? Do we exist in time or does time exist in us? In lyric, accessible prose, Carlo Rovelli invites us to consider questions about the nature of time that continue to puzzle physicists and philosophers alike.