When everything works the way it’s supposed to in philosophy textbooks, arguments are supposed to go one of a couple of ways:
1. Questions of empirical fact, like “Is the Earth getting warmer?” or “Did aliens build the pyramids?”. You debate these by presenting factual evidence, like “An average of global weather station measurements show 2014 is the hottest year on record” or “One of the bricks at Giza says ‘Made In Tau Ceti V’ on the bottom.” Then people try to refute these facts or present facts of their own.
2. Questions of morality, like “Is it wrong to abort children?” or “Should you refrain from downloading music you have not paid for?” You can only debate these well if you’ve already agreed upon a moral framework, like a particular version of natural law or consequentialism. But you can sort of debate them by comparing to examples of agreed-upon moral questions and trying to maintain consistency. For example, “You wouldn’t kill a one day old baby, so how is a nine month old fetus different?” or “You wouldn’t download a car.”
If you are very lucky, your philosophy textbook will also admit the existence of:
3. Questions of policy, like “We should raise the minimum wage” or “We should bomb Foreignistan”. These are combinations of competing factual claims and competing values. For example, the minimum wage might hinge on factual claims like “Raising the minimum wage would increase unemployment” or “It is very difficult to live on the minimum wage nowadays, and many poor families cannot afford food.” But it might also hinge on value claims like “Corporations owe it to their workers to pay a living wage,” or “It is more important that the poorest be protected than that the economy be strong.” Bombing Foreignistan might depend on factual claims like “The Foreignistanis are harboring terrorists”, and on value claims like “The safety of our people is worth the risk of collateral damage.” If you can resolve all of these factual and value claims, you should be able to agree on questions of policy.
Scott Alexander, “Ethnic Tension And Meaningless Arguments”, Slate Star Codex, 2014-11-04.
March 4, 2016
QotD: Arguments, by the book
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