Which of the authors of "Welcome to the Universe: An Astrophysical Tour" advocated for the Doomsday Argument?
J. Richard Gott John Richard Gott III (born February 8, 1947 in Louisville, Kentucky) is a professor of astrophysical sciences at Princeton University. He is known for developing and advocating two cosmological theories: Time travel and the Doomsday argument.
Barbara Marx Hubbard Barbara Marx Hubbard (born Barbara Marx; December 22, 1929) is a futurist, author and public speaker. She is credited with the concepts of ‘The Synergy Engine’ and the 'birthing' of humanity.