This argument, however, has been disputed recently by Paul Samuelson of MIT; writing in the Journal of Economics Perspectives, he suggests that "sometimes a productivity gain in one country can benefit that country alone, while permanently hurting the other country by reducing the gains from trade that are possible between the two countries".
Ovu je tvrdnju ipak nedavno osporio Paul Samuelson s MIT-a; u svojem članku u časopisu Journal of Economics Perspectives, natuknuo je kako "ponekad porast produktivnosti u jednoj zemlji može biti od koristi samo toj zemlji, pritom nanoseći trajnu štetu drugoj zemlji smanjujući dobit od trgovine koja bi bila moguća između dotične dvije zemlje".