The I Index

Hamilton Cain,
The Star Tribune
An encyclopedic, unwieldy and yet mesmerizing survey of humanity as told through millennia of rulers and their blood-drenched empires. It's a towering work of imagination, somehow successful as it teeters beneath the awesome weight of names, dates and interpretations.
Maya Jasanoff,
The New Yorker
Heavier on masters than on plot.
Douglas Smith,
The Wall Street Journal
Tells the story of humanity through families, be they large or small, powerful or weak, rich or poor. It is a book for people who want to read about people. There’s little attention paid to impersonal forces.
Gerard DeGroot,
The Times (UK)
A rollicking tale, a kaleidoscope of savagery, sex, cruelty and chaos.
David Armitage,
Times Literary Supplement (UK)
Weighing in at 1,300 pages, this rollicking, globetrotting 'biography of many people rather than one person' spans the Akkadian empire and the Russian invasion of Ukraine. It is almost unpickupable: whether you find it unputdownable may depend on your appetite for narrative and yearning for a thesis, as well as an iron stomach and sheer Sitzfleisch to match the author’s own.
David Crane,
The Spectator (UK)
It is a huge subject; but then this is a doorstopper of a book, running to a numbing 1,262-plus pages.
Francis P. Sempa,
New York Journal of Books
Necessarily selective.

Publishers Weekly
[A] sweeping chronicle.

Kirkus
A panoramic, abundantly populated, richly detailed history of the world through the stories of families across place and time.