Ethical Realism

May 31, 2011

Three Forms of Evidence

An argument uses premises to reach a conclusion, but we can’t just accept that every valid argument proves the conclusion to be true. If an argument has a valid form, we need to know that the premises are true before we can know the conclusion is true. We rarely know for certain that the premises of an argument are true. Instead, we do our best at justifying the premises. One way to do this is to provide evidence—reasons we should believe something to be likely true or accurate. Many people equate “evidence” with “observation,” but there could be other reasons to accept beliefs as well. I will discuss three types of evidence: (more…)


June 21, 2009

Chapter 3.10 “Moral Explanations” by Nicholas L Sturgeon

Many philosophers of our past wanted philosophy to be as much like mathematics as possible. That would give us the highest form of knowledge and certainty. This task is now considered unrealistic. Instead, philosophers want philosophy to be as much like natural science as possible. Nicholas L Sturgeon provides an argument that ethics can be like science because moral facts can have causal power and can therefore be necessary facts in determining our observations. (more…)

May 24, 2009

Chapter 3.9 “How to be a Moral Realist” by Richard N Boyd Part 2

Objections to Moral Realism

In order to show that moral realism can be appealing, Boyd must first show why moral realism isn’t unappealing.

Right now moral antirealism is popular and there are many objections people give to moral realism in order to prove that realism is implausible. Boyd considers several objections and shows how the same kinds of objections could be used against scientific realism, but would fail. Boyd will argue that these objections fail against moral realism for the same reason that they would fail against scientific realism.

This section will only discuss the objections to moral realism. The next section will be Boyd’s response to the objections. (more…)

May 11, 2009

Chapter 3.9 “How to be a Moral Realist” by Richard N Boyd Part 1

We need to know how we thought of moral ideas, like good and bad. If we just made it up, then we should be moral antirealists. If we discovered that things can really be good or bad, then we should be moral realists.

If you think electrons are real, then you are a scientific realist. Entities theorized about science can be real despite the fact that we can’t experience the entities with our five senses. There are very plausible philosophical arguments that we should be scientific realists. Richard Boyd argues that in order to understand a plausible account of moral realism, we should understand a plausible account of scientific realism. (more…)

February 22, 2009

Chapter 3.6 “Ethics and Observation” by Gilbert Harman

Harman examines whether or not we can “observe” moral facts in the sense that we can observe scientific facts (119). If so, we can treat ethics as a natural science. Harman’s essay is related to a very important philosophical problem: Is the truth about moral facts relevant to our beliefs about moral facts? If our moral beliefs are unrelated to the truth about moral facts, then we have little reason to trust our moral beliefs. (more…)

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