Time door · 8 min read · published
Does the Present Exist?
Our experience begins in a vivid now. Relativity gives us no universal one. What, exactly, follows from that tension?
Thesis
The present is unmistakable as a feature of experience, but relativity does not describe a single cosmic moment shared by all observers. That result constrains metaphysical pictures of time without selecting one: the universe may be a block, a growing history, a network of relations, or something more fundamental from which time emerges. The direction we remember and the direction in which disorder tends to increase help explain why time feels like passage, but they do not by themselves settle what the present is.
A now you can inhabit
Supporting/contextual references: [time-einstein-1905] [time-eddington-1928]
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When simultaneity comes apart
Supporting/contextual references: [time-einstein-1905] [time-minkowski-1908]
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The block and its rivals
Supporting/contextual references: [time-minkowski-1908] [time-price-1996] [time-rovelli-2018]
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Why time seems to have a direction
Supporting/contextual references: [time-price-1996] [time-carroll-2010]
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Memory, records, and the shape of a self
Supporting/contextual references: [time-eddington-1928] [time-carroll-2010]
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What physics does, and does not, settle
Supporting/contextual references: [time-einstein-1905] [time-price-1996] [time-rovelli-2018]
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Open research directions
Supporting/contextual references: [time-price-1996] [time-carroll-2010] [time-rovelli-2018]
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A present between worlds
Supporting/contextual references: [time-eddington-1928] [time-rovelli-2018]
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Sources & references
Supporting/contextual references, not claim-level proof.
- Albert Einstein — On the Electrodynamics of Moving BodiesAnnalen der Physik 17, 891–921, 1905.Publisher link
- Hermann Minkowski — Space and TimeAddress to the 80th Assembly of German Natural Scientists and Physicians, 1908.
- Arthur S. Eddington — The Nature of the Physical WorldCambridge University Press, 1928.
- Huw Price — Time's Arrow and Archimedes' PointOxford University Press, 1996.
- Sean Carroll — From Eternity to Here: The Quest for the Ultimate Theory of TimeDutton, 2010.
- Carlo Rovelli — The Order of TimeRiverhead Books, 2018.