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In metaphilosophy and ethics, metaethics is the study of the nature, scope, ground, and meaning of moral judgment, ethical belief, or values.It is one of the three branches of ethics generally studied by philosophers, the others being normative ethics (questions of how one ought to be and act) and applied ethics (practical questions of right behavior in given, usually contentious, situations).
Ideal observer theory is the meta-ethical view which claims that ethical sentences express truth-apt propositions about the attitudes of a hypothetical ideal observer. In other words, ideal observer theory states that ethical judgments should be interpreted as statements about the reactions that a neutral and fully informed observer would have ...
Ethical naturalism has been criticized most prominently [according to whom?] by ethical non-naturalist G. E. Moore, who formulated the open-question argument.Garner and Rosen say that a common definition of "natural property" is one "which can be discovered by sense observation or experience, experiment, or through any of the available means of science."
In meta-ethics, expressivism is a theory about the meaning of moral language.According to expressivism [citation needed], sentences that employ moral terms – for example, "It is wrong to torture an innocent human being" – are not descriptive or fact-stating; moral terms such as "wrong", "good", or "just" do not refer to real, in-the-world properties.
It does mean, however, that goodness cannot be reduced to natural properties such as needs, wants or pleasures. Moore also stated that a reduction of ethical properties to a divine command would be the same as stating their naturalness. This would be an example of what he referred to as "the naturalistic fallacy."
Hilary Putnam's book Ethics without Ontology (Harvard, 2004) argues for a similar view, that ethical (and for that matter mathematical) sentences can be true and objective without there being any objects to make them so. Cognitivism points to the semantic difference between imperative sentences and declarative sentences in normative subjects ...
Ethical sentences express propositions. Some such propositions are true. The truth or falsity of such propositions is ineliminably dependent on the (actual or hypothetical) attitudes of people. [2] [3] This makes ethical subjectivism a form of cognitivism (because ethical statements are the types of things that can be true or false). [4]
Metascience is an attempt to increase the quality of scientific research while reducing wasted activity; it uses research methods to study how research is done or can be improved. It has been described as " research on research ", " the science of science ", and "a bird's eye view of science". [ 6 ]