I’d been traveling in Asia long enough to know that monkeys there are nothing like their trombone-playing, tambourine-banging cousins I’d seen on TV as a kid. Free-living Asian primates possess a characteristic I found shocking and confusing the first time I saw it: self-respect. If you make the mistake of holding the gaze of a street monkey in India, Nepal, or Malaysia, you’ll find you’re facing a belligerently intelligent creature whose expression says, with a Robert DeNiro–like scowl, “What the hell are you looking at? You wanna piece of me?” Forget about putting one of these guys in a little red vest.

Marriage," "mating," and "love" are socially constructed phenomena that have little or no transferable meaning outside any given culture. The examples we've noted of rampant ritualized group sex, mate-swapping, unrestrained casual affairs, and socially sanctioned sequential sex were all reported in cultures that anthropologists insist are monogamous simply because they've determined that something they call "marriage" takes place there. No wonder so many insist that marriage, monogamy, and the nuclear family are human universals. With such all-encompassing interpretations of the concepts, even the prairie vole, who "sleeps with anyone," would qualify.

Griffin Hansbury, who was born female but underwent a sex change after graduating from college, has another well-informed view of the powers of testosterone. “The world just changes,” he said. “The most overwhelming feeling was the incredible increase in libido and change in the way I perceived women.” Before the hormone treatments, Hansbury said, an attractive woman in the street would provoke an internal narrative: “She’s attractive. I’d like to meet her.” But after the injections, no more narrative. Any attractive quality in a woman, “nice ankles or something,” was enough to “flood my mind with aggressive pornographic images, just one after another…Everything I looked at, everything I touched turned to sex.” He concluded, “I felt like a monster a lot of the time. It made me understand men. It made me understand adolescent boys a lot.

But with trust we can strive to accept even what we cannot understand.

You Are What You EatTake food for example. We all assume that our craving or disgust is due to something about the food itself - as opposed to being an often arbitrary response preprogrammed by our culture. We understand that Australians prefer cricket to baseball, or that the French somehow find Gerard Depardieu sexy, but how hungry would you have to be before you would consider plucking a moth from the night air and popping it, frantic and dusty, into your mouth? Flap, crunch, ooze. You could wash it down with some saliva beer.How does a plate of sheep brain's sound? Broiled puppy with gravy? May we interest you in pig ears or shrimp heads? Perhaps a deep-fried songbird that you chew up, bones, beak, and all? A game of cricket on a field of grass is one thing, but pan-fried crickets over lemongrass? That's revolting.Or is it? If lamb chops are fine, what makes lamb brains horrible? A pig's shoulder, haunch, and belly are damn fine eatin', but the ears, snout, and feet are gross? How is lobster so different from grasshopper? Who distinguishes delectable from disgusting, and what's their rationale? And what about all the expectations? Grind up those leftover pig parts, stuff 'em in an intestine, and you've got yourself respectable sausage or hot dogs. You may think bacon and eggs just go together, like French fries and ketchup or salt and pepper. But the combination of bacon and eggs for breakfast was dreamed up about a hundred years aqo by an advertising hired to sell more bacon, and the Dutch eat their fries with mayonnaise, not ketchup.Think it's rational to be grossed out by eating bugs? Think again. A hundred grams of dehydrated cricket contains 1,550 milligrams of iron, 340 milligrams of calcium, and 25 milligrams of zinc - three minerals often missing in the diets of the chronic poor. Insects are richer in minerals and healthy fats than beef or pork. Freaked out by the exoskeleton, antennae, and the way too many legs? Then stick to the Turf and forget the Surf because shrimps, crabs, and lobsters are all anthropods, just like grasshoppers. And they eat the nastiest of what sinks to the bottom of the ocean, so don't talk about bugs' disgusting diets. Anyway, you may have bug parts stuck between your teeth right now. The Food and Drug Administration tells its inspectors to ignore insect parts in black pepper unless they find more than 475 of them per 50 grams, on average. A fact sheet from Ohio State University estimates that Americans unknowingly eat an average of between one and two pounds of insects per year.An Italian professor recently published Ecological Implications of Mini-livestock: Potential of Insects, Rodents, Frogs and Snails. (Minicowpokes sold separately.) Writing in Slate.com, William Saletan tells us about a company by the name of Sunrise Land Shrimp. The company's logo: "Mmm. That's good Land Shrimp!" Three guesses what Land Shrimp is. (20-21)

No group-living nonhuman primate is monogamous, and adultery has been documented in every human culture studied- including those in which fornicators are routinely stoned to death. In light of all of this bloody retribution, it's hard to see how monogamy comes "naturally" to our species. Why would so many risk their reputations, families, careers- even presidential legacies- for something that runs against human nature? Were monogamy an ancient, evolved trait characteristic of our species, as the standard narrative insists, these ubiquitous transgressions would be infrequent and such horrible enforcement unnecessary. No creature needs to be threatened with death to act in accord with its own nature.