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EPISODE · Jun 5, 2026 · 1H 5M

The Arrow of Time

from David's NotebookLM Audio Collection · host David Weissman

What if time does not really “flow” at all? In this deep dive, we explore one of the strangest ideas in modern physics: that past, present, and future may all exist together in a four-dimensional block universe, while our experience of time moving forward may be tied to memory, consciousness, and entropy. From Einstein’s relativity and time dilation to black holes, wormholes, and the theoretical possibility of traveling into the past, this episode unpacks how physics has radically changed our understanding of time, causality, and the preciousness of the present moment.

What if time does not really “flow” at all? In this deep dive, we explore one of the strangest ideas in modern physics: that past, present, and future may all exist together in a four-dimensional block universe, while our experience of time moving forward may be tied to memory, consciousness, and entropy. From Einstein’s relativity and time dilation to black holes, wormholes, and the theoretical possibility of traveling into the past, this episode unpacks how physics has radically changed our understanding of time, causality, and the preciousness of the present moment.

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The Arrow of Time

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How long is this episode of David's NotebookLM Audio Collection?

This episode is 1 hour and 5 minutes long.

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This episode was published on June 5, 2026.

What is this episode about?

What if time does not really “flow” at all? In this deep dive, we explore one of the strangest ideas in modern physics: that past, present, and future may all exist together in a four-dimensional block universe, while our experience of time moving...

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