Cultural anthropology had long held that cultural beliefs and information—i.e., socially propagated ideas—survive and propagate because of the survival value they provide to the human groups that adopt them. Lynch embraced this notion of host-benefiting idea propagation, but his analysis added to this the notion that ideas could also propagate at the expense of their human hosts. He noted, for example, that beliefs which induced their hosts into self-sacrifice before sufficiently large audiences (e.g. earlier Christians refusing to worship the Emperor and dying serenely in Roman arenas or Islamist suicide bombers taping farewell videos for posthumous broadcast to worldwide audiences) could survive or even multiply just by capturing one or more hosts to replace the one it sacrificed.