Little is theoretically known about the evolution of cooperation in «norm ecosystems» in which individuals with different norms interact through helping games. (sciencedaily.com)
In reality, however, different people often follow different norms, which lead to different opinions of the same person. (sciencedaily.com)
If there's a tension within the firm's UK arm, it's the quite different norms which the Birmingham and London offices are said to have (remember that as recently as 2014 these were different firms). (legalcheek.com)