Both Thorstein Veblen and Peter Kropotkin had an expanded view on evolution that was more than biological development, but also inlcuded cultural development as well. Kropotkin demonstrated that cooperation in social groups allowed people and animals to survive in the conditions of their environment. Veblen theorized that the idea of competition within a group was a fairly recent phenomenon, with people competing when surpluses were created and unevenly distributed. In other words, when societies moved away from subsistence. Veblen agreed with Kropotkin in that cooperation is still possible when an unequal surplus is evenly distirbuted or when new forms of abundance are created.