Status Updates From Behave: The Biology of Huma...

Must a society suppress homicide to accomplish genocide?

...groups with highly hostile interactions with neighbors tend to have minimal internal conflict. Or, to spin this another way, groups with high levels of internal conflict are too distracted to focus hostility on the Others.

"The group is more arrogant, hypocritical, self-centered and more ruthless in the pursuit of its ends than the individual."

Squid are not great swimmers com-pared with sailfish (maximum speed: sixty-eight miles per hour). But they're damn good for something whose great-great-grandparents were mollusks.