Moral Minds: How Nature Designed Our Universal Sense of Right and Wrong Hauser, M. 2006

From Scientific American
You are driving a train when you see five hikers on the track ahead of you and a siding with a single hiker. Is it okay to flip a switch and send the train onto the siding, killing one hiker but saving five? Most people say yes. Would it be okay for a doctor to harvest organs from a healthy person to save five patients? Most people say no. But they often do not have a clue why they think one of these choices is okay and the other is not. And that fact is a clue that we have an innate moral faculty. Like competent speakers who do not understand the grammatical underpinnings of language, people tend to have strong, gut-level opinions about what is moral but are unable to give coherent explanations. Marc D. Hauser, a Harvard University psychologist, wants to do for morality what Massachusetts Institute of Technology linguist Noam Chomsky did for language—he wants to discover the universal “moral grammar.” Chomsky suggested that humans are born with a “universal grammar,” a cognitive capacity that helps us acquire language and shapes the way we apply language rules. Hauser thinks our moral grammar works the same way, helping us isolate moral lessons from our culture and make judgments about right and wrong. In Moral Minds, Hauser reviews what we already know about innate human faculties—for instance, that even infants seem to understand that people and animals have intentions, whereas inanimate objects do not. And he presents evidence that our universal morality is probably based on rules about fairness, proportionality and reciprocity, among other things. The material is captivating and ranges from philosophy to anthropology to psychology, including some of Hauser’s own original work. Hauser’s main failing is that he sometimes loses the thread of his argument; he piles on the detail but fails to make it clear how his examples support his argument. The upshot, though, is that we do not yet know exactly how our moral grammar works or even which cognitive capacities contribute to our moral faculty. Hauser’s achievement is to argue convincingly that such a faculty exists and to raise some of the many questions that have to be answered before we will fully understand it.

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