Information Theory part 15: The search for Extraterrestrial Intelligence

How can we know if alien signals are intelligent? What does it mean to be intelligent? This final chapter features Carl Sagan, Phillip Morrison, Kent Cullers (SETI - The search for extraterrestrial intelligence) Link to paper by Doyle: https://web.archive.org/web/20060903080122/http://faculty.vetmed.ucdavis.edu/faculty/bjmccowan/Pubs/McCowanetal.JCP.2002.pdf