&gt; This makes perfect sense.<p>Just-so stories have that trait.<p>&quot;There&#x27;s a huge evolutionary advantage in calling attention to good actors (someone behaving a way which is advantegeous to the tribe), because that person will have that behaviour reinforced, and the social proof will motivate others to follow suite. This helps the group.&quot;<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Just-so_story" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Just-so_story</a>