you know in your bowels there's a lot of microbiotic 'gut flora' that assist with digestion, and it makes me wonder if there's more to this gut flora than we suspect. i bet you indians and mexicans have way better gut flora for eating spicy contaminated gross foods, but what if they're even more important? kind of like the worms that live in Fry in Futurama and make him sexy and smart. Like if you take the gut flora from the smartest people around the world and mix them together and do a fecal transplant (that's what it's called) do you get superpowers? and you know the flora passes matrilineally, so if flora does impact your behavior, it would explain why jewishness is also matrilineal.