 Our results show that in collective behavior spatio-temporal dynamics are important , and that individual-level selection does not in general provide a robust proximate mechanism in support of the ``criticality hypothesis'' in animal groups .
<coherence>  Our results show that in collective behavior spatio-temporal dynamics are important , and that individual-level selection does not in general provide a robust proximate mechanism in support of the ``criticality hypothesis'' in animal groups .
 Our results show that in collective behavior , and that individual-level selection does not in general provide a robust proximate mechanism in support of the ``criticality hypothesis'' in animal groups .