[1][2][3][4][5] An audiobook, four hours and nineteen minutes long, was read by Benedict Cumberbatch.

[6] The Order of Time is divided into four sections, covering the theory of relativity, space-time, loop quantum gravity, and thermodynamics.

He then discusses Ludwig Boltzmann's concept of entropy, which never decreases, and its role in thermodynamics and Bayesian probability theory, which Rovelli described as "the only equation of fundamental physics that knows any difference between past and future", and concluded that the direction of time is lost.

[8] Literary Review noted Rovelli's skill for presenting complex and even unexplainable concepts in an accessible form, "the brevity and elegance of which belie its depth.

The film tells the story of a gathering of old friends at a seaside villa who soon discover that the world might be ending within the space of a few hours.