The main argument against group selection has always been that, well sure, it would be nice to have a group of cooperators, but as soon as you have a group of cooperators, they're just going to get taken over by free-riders, individuals that are going to exploit the hard work of the others.
Principalul argument împotriva selecţiei de grup a fost dintotdeauna faptul ca, bineînţeles, ar fi drăguţ să avem mereu un grup cooperant, dar imediat ce există un grup de acest fel, membrii săi vor fi acaparaţi de paraziţi, adică de indivizi care vor exploata munca devotată a celorlalţi.