title: Rules of engagement.
authors: California Institute of Technology, Pasadena, California 91125-8100, USA.
authors: John
authors: J
authors: Doyle
authors: Marie
authors: M
authors: Csete
mesh_terms: D000818:Animals; D005075:Biological Evolution; D006801:Humans; D020407:Internet; D008954:Models, Biological; D012984:Software