I don’t know who “Helen Fisher, a biological anthropologist and one of the world’s leading relationship researchers” studied under but she doesn’t seem to understand that monogamy was an essential evolutionary adaptation needed to fulfill the needs of large brained but slow developing offspring. Since the child was born with a brain that was still developing over a multi year period, a stable family unit was essential. Of course the logical gender adaptations are simply unacceptable and thus wrong to the feminists who are rearranging family structure out of existence.
Biology vs. ideology.
Yes.
Nor does she seem to realize there are a lot of other things that can be rationalized via an evolutionary biology lens. Things that may not be as benign as fooling around.