Scientists Say Sharing Child-Rearing Duties Helped Make Us Altruistic
Say you meet some guy in a business suit. Maybe he’s got slicked back hair and a ponytail, maybe he reads a lot of Ayn Rand. And that guy tells you that it’s a dog-eat-dog world out there, that a person is just a miserable animal only in it for itself, and that you have to screw over others before they screw over you?