Sociocultural evolution justify new policies such as eugenics. Most 19th-century and some 20th-century approaches aimed to provide models for the evolution of humankind as a single entity. However, most 20th-century approaches, such as multilineal evolution, focused on changes specific to individual societies. Moreover, they rejected directional change (i.e. orthogenetic, teleological or progressive change). Most archaeologists work within the framework of multilineal evolution. Other contemporary approaches to social change include neoevolutionism, sociobiology, dual inheritance theory, modernisation theory and postindustrial theory. In his seminal 1976 book "The Selfish Gene", Richard Dawkins wrote that "there are some examples of cultural evolution in birds and monkeys,
Introducing Evolution Introducing Evolution Introducing Evolution is a 2001 graphic study guide to Evolution written by Dylan Evans and illustrated by Howard Selina. The volume, according to the publisher's website, "provides a step-by-step guide to ‘Darwin’s dangerous idea’ and takes a fresh look at the often misunderstood concepts of natural selection and the selfish gene." This volume was originally published in the UK by Icon Books in 2001, and subsequently republished with different covers and the subtitle, "A Graphic Guide". Editions: Related volumes in the series: Science writer Brian Clegg, author of "Introducing Infinity" (2012) in the same series, states that, "book