It bears repeating that we are not attributing any particular nobility or, for that matter, ignobility to foragers. Some behaviors that seem normal to contemporary people would quickly destroy many small-scale foraging societies, rendering them dysfunctional. Unrestrained self-interest in particular, whether expressed as food-hoarding or excessive sexual possessiveness, is a direct threat to group cohesion and is therefore considered shameful and ridiculous.
Is there any doubt that societies can reshape such impulses?
Right now, girl’s necks are being elongated ring by brass ring in parts of Thailand and Burma to make them more appealing to men. Clitorises are being cut away and labia sewn together in villages all over North Africa to dampen female desire, while in glamorous California, reduction labioplasty and other cosmetic vaginal surgeries have recently become a booming business. Elsewhere, the penises of boys are being circumcised or split open in ritualistic subincision. You get the point.
From savoring saliva beer or cow blood milkshakes to wearing socks with sandals, there is little doubt that people are willing to think, feel, wear, do, and believe pretty much anything if their society assures them it’s normal.
Social forces that convince people to stretch their necks beyond the breaking point, schmush the heads of their infants, or sell their daughters into sacred prostitution are quite capable of reshaping or neutralizing sexual jealousy by rendering it silly and ridiculous. By rendering it abnormal.
Sex at Dawn
Ryan and Jethá 2010