Elizabeth Sklar collaborated on the work on coevolving behavior with live creatures (chapter 3).
Hugues Juillé collaborated with the Tron GP architecture (section 3.3.3) and the novelty engine (section 3.3.7).
Louis Lapat collaborated on EvoCAD (section 2.9).
Thanks to Jordan Pollack for the continuing support and for being there when it really matters.
Thanks to Betsy Sklar, my true American friend. And to Richard Watson for the love and the focus on the real science. Also to all the people who contributed in one way or another, in no particular order: José Castaño, Adriana Villella, Edwin De Jong, Barry Werger, Ofer Melnik, Isabel Ennes, Sevan Ficici, Myrna Fox, Miguel Schneider, Maja Mataric, Martin Cohn, Aroldo Kaplan, Otilia Vainstok.
And mainly to my family and friends, among them: María Argüello, Santiago Funes, Soledad Funes, Carmen Argüello, María Josefa González, Faustino Jorge, Martín Levenson, Inés Armendariz, Enrique Pujals, Carlos Brody, Ernesto Dal Bo, Martín Galli, Marcelo Oglietti.