Orr wrote:
I recognise Out Of His Element and Dead, but who are the other two?
(on the right)
http://en.wikipedia.org/wiki/Daniel_Dennett
Daniel Clement "Dan" Dennett III (born March 28, 1942)[1][2] is an American philosopher, writer, and cognitive scientist whose research centers on the philosophy of mind, philosophy of science and philosophy of biology, particularly as those fields relate to evolutionary biology and cognitive science.[3]
He is currently the Co-director of the Center for Cognitive Studies, the Austin B. Fletcher Professor of Philosophy, and a University Professor at Tufts University. Dennett is an atheist and secularist, a member of the Secular Coalition for America advisory board,[4] as well as an outspoken supporter of the Brights movement. Dennett is referred to as one of the "Four Horsemen of New Atheism", along with Richard Dawkins, Sam Harris, and the late Christopher Hitchens.
http://en.wikipedia.org/wiki/Lawrence_M._Krauss
Lawrence Maxwell Krauss (born May 27, 1954) is an American theoretical physicist and cosmologist who is Foundation Professor of the School of Earth and Space Exploration at Arizona State University and director of its Origins Project.[2] He is known as an advocate of the public understanding of science, of public policy based on sound empirical data, of scientific skepticism and of science education and works to reduce the impact of superstition and religious dogma in pop culture.[3] He is also the author of several bestselling books, including The Physics of Star Trek and A Universe from Nothing.