哲学家Josh Greene和他普林斯顿大学的同事们揭示了个人的道德困境（例如，你会不会为救七个人的命而直接杀死一个人）所利用的是我们的情感，而不是更高的认知力—这让许多与其意见相左的哲学家们懊恼不已。
The philosopher Josh Greene and his colleagues at Princeton University have shown that personal moral dilemmas (for example, whether you would directly kill one person to save seven others) use our emotions rather than higher cognition – to the chagrin of many philosophers who claimed otherwise.