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Infants in the next generation saw their mothers washing potatoes, and virtually all the next generation, both male and female, grew up washing their food, but not the older males! Older males were resistant to the new idea, refusing to wash their food even when older females made the change. It was as if a new idea from a female, or perhaps a lower-ranking member of macaque society, were rejected by older males even though it was a good idea. They seemed to choose eating sand rather than admitting Imo was smarter than they were.
下一代的幼猴看到他們的母親洗土豆，幾乎所有的下一代，無論雄性還是雌性，長大后都會(huì)洗食物。但老年雄候不會(huì)那樣做！老年雄候不贊成洗食物的做法，甚至老年雌候改變時(shí)，他們同樣會(huì)拒絕洗食物。似乎是這樣：如果一個(gè)新的想法來自一個(gè)雌猴，或者一個(gè)較低級別的獼猴社會(huì)成員，即使那是一個(gè)好主意，老年雄猴也會(huì)拒絕。他們似乎寧愿選擇吃沙子也不愿意承認(rèn)Imo比他們聰明。
