Taking Weird Ethical Ideas Seriously Drives Moral Progress

Some people must be in the business of seriously reasoning through even weird-seeming ethical ideas, because history shows that moral progress consistently came from 'moral weirdos'—the early Quakers who opposed slavery, were vegetarian, and supported women's suffrage and pacifism were mocked as absurd, yet their then-fringe views became modern moral common sense; humanity has a long track record of getting morality badly wrong.