Original sentence: Indeed, they argue that workers have to be rewarded with currency according to their immediate contribution to production.The rebuttal to this criticism is that natural selection favours the collective that survives, rather than just individuals, and thus there is an evolutionary incentive for gift economics.They thus reject an gift economic view of work with respect to incentive
Edited sentence: Critics call this view an utopy, and claim that there is no prove that such a co-operative society could operate for a long time without being undermined.Indeed, they also believe that a meritocratic system can be implemented by taxation and transfers.Indeed, they argue that workers have to be rewarded according to their contribution to production (a system called meritocracy).They thus reject an egalitarian view of workers with respect to wages