Unit of selection and Confirmation of Evolutionary Theory" provides a basic "philosophical" introduction to the debate. Below, cases of selection at the genic, cellular, individual and group level from within the multi-level selection perspective are presented and discussed. George C. Williams in his influential book "Adaptation and Natural Selection" was one of the first to present a gene-centered view of evolution with the gene as the unit of selection, arguing that a unit of selection should exhibit a high degree of permanence. Richard Dawkins has written several books popularizing and expanding the idea. According to Dawkins, genes cause phenotypes and a gene is
Irreligion in the United Kingdom to prominence in 1976 following the release of "The Selfish Gene", increasingly figured in British irreligion with the release of his 1986 work "The Blind Watchmaker", in which he argued in favour of evolutionary natural selection as opposed to intelligent design and creationism. In the 21st century, New Atheism became a popular topic of debate, support and critique in the United Kingdom. Dawkins' 2006 book "The God Delusion" and Christopher Hitchens' 2007 book "God Is Not Great" were considered emblematic works of the era among British authors, and Dawkins advocated for the Brights movement. The Atheist Bus Campaign was inaugurated