In 2018, Houghton Mifflin Harcourt published his second book, Human Errors: A Panorama of Our Glitches, from Pointless Bones to Broken Genes, which was listed by Publishers Weekly as a "Big Title" for spring 2018 in the Science category. In this book, Lents explains that humans no longer need to rely on the body's physical ability because we learned to solve life's challenges by using our brains to invent tools and our social capabilities to allow for division of labor and cooperation. Human Errors received many favorable reviews and was included on recommended summer reading lists in The Wall Street Journal, Discover Magazine, EndPoints, the Financial Times, and was "Book of the Month" for August 2018 in Geographical Magazine.
