hm, have u ever heard of natural sciences?

"human and nonhuman primates tend to live in large social groups that possess dominant and subordinate members" (Thierry, 2000, as quoted in Munuera, J., Rigotti, M. & Salzman, C.D. Shared neural coding for social hierarchy and reward value in primate amygdala. Nature Neuroscience 21, 415–423 (2018))