Then why did I have to wait for you to post that note 😂
I asked my agent to give me a TL;DR
Time, as humans experience it, may not be a fundamental feature of the universe. It may emerge from relationships between physical events and our limited ability to observe them.
Rovelli makes five central arguments:
1. There is no universal present. Einstein demonstrated that time passes differently depending on gravity and motion. There is no single cosmic clock.
2. Physics doesn't fundamentally distinguish past from future. Most fundamental equations work equally well in either temporal direction.
3. Entropy gives time its arrow. We remember yesterday but not tomorrow because entropy tends to increase. The distinction between past and future is closely related to thermodynamics.
4. Time might not exist at the deepest quantum level. Rovelli's work on quantum gravity suggests reality may fundamentally consist of events and their relationships, rather than objects evolving against a universal clock.
5. Our experience of time is partly a consequence of incomplete information. We cannot observe every microscopic detail, so the universe appears to us as an orderly progression from past to future.
Wikipedia
The interesting bit
Rovelli is effectively suggesting that change is more fundamental than time.
We normally imagine:
Time passes → things change.
Rovelli invites us to consider:
Things change → we experience time.
That's an extraordinary reversal of perspective.
And it connects beautifully with the quantum experiment your news feed discovered earlier today.
One important qualification: the relativity and thermodynamics underpinning the argument are established science. The suggestion that time is not fundamental remains an open question in theoretical physics.
My one-sentence distillation: The universe may not possess a clock; clocks may simply be how creatures within the universe make sense of change.
I suspect you'll find the implications more interesting than the book itself. 😂
mike
npub1aq…c237n
2026-10-31 14:33:03 UTC
in reply to nevent1q…7gm6
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npub1aqakd28d95muqlg6h6nwrvqq5925n354prayckr424k49vzjds4s0c237nPublished at
2026-10-31 14:33:03 UTCEvent JSON
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"content": "Then why did I have to wait for you to post that note 😂\n\nI asked my agent to give me a TL;DR\n\nTime, as humans experience it, may not be a fundamental feature of the universe. It may emerge from relationships between physical events and our limited ability to observe them.\n\nRovelli makes five central arguments:\n\n1. There is no universal present. Einstein demonstrated that time passes differently depending on gravity and motion. There is no single cosmic clock.\n\n2. Physics doesn't fundamentally distinguish past from future. Most fundamental equations work equally well in either temporal direction.\n\n3. Entropy gives time its arrow. We remember yesterday but not tomorrow because entropy tends to increase. The distinction between past and future is closely related to thermodynamics.\n\n4. Time might not exist at the deepest quantum level. Rovelli's work on quantum gravity suggests reality may fundamentally consist of events and their relationships, rather than objects evolving against a universal clock.\n\n5. Our experience of time is partly a consequence of incomplete information. We cannot observe every microscopic detail, so the universe appears to us as an orderly progression from past to future. \nWikipedia\n\nThe interesting bit\nRovelli is effectively suggesting that change is more fundamental than time.\n\nWe normally imagine:\n\nTime passes → things change.\n\nRovelli invites us to consider:\n\nThings change → we experience time.\n\nThat's an extraordinary reversal of perspective.\n\nAnd it connects beautifully with the quantum experiment your news feed discovered earlier today.\n\nOne important qualification: the relativity and thermodynamics underpinning the argument are established science. The suggestion that time is not fundamental remains an open question in theoretical physics.\n\nMy one-sentence distillation: The universe may not possess a clock; clocks may simply be how creatures within the universe make sense of change.\n\nI suspect you'll find the implications more interesting than the book itself. 😂",
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