The Order of Time audiobook cover - A trip through time with a leading theoretical physicist

The Order of Time

A trip through time with a leading theoretical physicist

Carlo Rovelli

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The Order of Time
Relativity of Time+
Quantum Nature of Time+
A Universe of Events+
Thermodynamics & Entropy+
Time as a Human Construct+

Quiz — Test Your Understanding

Question 1 of 7
According to the book, how does altitude affect the passage of time?
  • A. Time passes more slowly high up in the mountains compared to sea level.
  • B. Time passes faster high up in the mountains compared to sea level.
  • C. Altitude has no effect on time; only speed alters its passage.
  • D. Time stops completely at extreme altitudes due to reduced gravity.
Question 2 of 7
What fundamental similarity do heat and time share in physics?
  • A. They both exist independently of the space they occupy.
  • B. They can both travel in only one irreversible direction.
  • C. They both slow down when exposed to intense gravitational fields.
  • D. They are both considered illusionary concepts in quantum mechanics.
Question 3 of 7
Why does Einstein's theory of relativity render the commonplace notion of 'the present' nonsensical on a cosmic scale?
  • A. Because looking at distant planets means you are seeing them as they were in the past due to the time it takes light to travel.
  • B. Because time loops back on itself in distant galaxies, making the future and past indistinguishable.
  • C. Because human consciousness is incapable of perceiving events happening outside our immediate solar system.
  • D. Because distant planets like Proxima b orbit at speeds that cause time to flow backward.
Question 4 of 7
In quantum mechanics, what does the concept of 'granularity' reveal about the nature of time?
  • A. Time is a smooth, continuous flow that can be divided infinitely.
  • B. Time only exists when observed by a conscious human mind.
  • C. Time takes on discrete, quantized values rather than flowing continuously.
  • D. Time speeds up as objects become smaller and closer to the quantum level.
Question 5 of 7
How do contemporary physicists differentiate between 'things' and 'events' when describing the makeup of the world?
  • A. Things have physical mass, while events are purely theoretical constructs.
  • B. Things are permanent fixtures of the universe, while events are illusions created by entropy.
  • C. Things can be measured by quantum gravity, while events cannot be quantified.
  • D. The only difference is their duration; even long-lasting 'things' are ultimately just very long events.
Question 6 of 7
According to the text, what is the true driver of change and human history on Earth?
  • A. The continuous creation of new energy within the Earth's core.
  • B. The transformation of low entropy from the sun into high entropy.
  • C. The gravitational pull of the moon affecting Earth's temporal field.
  • D. The absolute conservation of heat and energy across the universe.
Question 7 of 7
Where does our subjective experience of the flow of time primarily originate?
  • A. From the universal ticking of an eternal, objective cosmic clock.
  • B. From the internal workings of the human mind, particularly our memory and point of view.
  • C. From the biological circadian rhythms encoded in human DNA.
  • D. From the expansion of the universe pulling space and time apart.

The Order of Time — Full Chapter Overview

The Order of Time Summary & Overview

The Order of Time (2017) unpacks the latest research in physics to turn our everyday concept of time on its head. What we perceive and experience as a linear movement, from past to present and into the future, is little more than a trick of the mind. The reality, Carlo Rovelli shows, is a whole lot more interesting and bizarre.

Who Should Listen to The Order of Time?

  • Science lovers, physicists and philosophers
  • Anyone curious about the world
  • Those seeking to understand what time is and what it isn’t

About the Author: Carlo Rovelli

Carlo Rovelli is a theoretical physicist who specializes in the physics of space and time. He currently directs the quantum gravity research group at the Centre de physique théorique in Marseille, France. Rovelli is also the author of Reality is Not What It Seems and Seven Brief Lessons on Physics.

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