THE GLOBE

This sequel to the fantasy/nonfiction hybrid The Science of Discworld (2014; U.K. 1999), wherein the bumbling wizards of Discworld’s Unseen University accidentally created our universe and the planet Roundworld, aka Earth, first manifested in the U.K. in 2002.

In the first book we learned that the inhabitants of Roundworld will escape the planet via a space elevator before another ice age would have wiped them (us) out. Unfortunately, Roundworld (“It mostly had ice ages, and was less engrossing than an ant farm”) has become infested with elves—Pratchett’s version being thoroughly nasty creatures like psychic leeches that, if left to themselves, will sap humanity’s creativity and drive so that nobody (human, that is) will escape the forthcoming disaster. Thanks to Hex, Discworld’s intelligent, magic-powered computer, the wizards can move through time, so they travel back and banish the elves. However, the humans that result are placid, cowlike creatures, incurious and almost devoid of intellect. Somehow, elves are essential to human development. But how? And what to do? In chapters that alternate with Pratchett’s tale, Stewart (Mathematics/Univ. of Warwick) and Cohen (Biology and Mathematics/Univ. of Warwick) explore, via physics, biology, literature and a dozen other topics, the role of culture or, more precisely, narrative, in fostering curiosity and intellectual development (“we may indeed share 98 per cent of our genes with chimpanzees, but then, we share 47 per cent with cabbages”). Readers who simply want more Pratchett may begin by skimming the more factual sections, but it will dawn on many that the discussions are at least as fascinating and entertaining as the antics of the wizards.

It's baffling why this appealingly distinctive offshoot (there are two volumes still to come) of the wildly popular Discworld yarns took so long to cross the Atlantic.