This video outlines the Frege-Geach objection to noncognitivism in metaethics, and then explains some of the responses that noncognitivists have proposed.

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0:00 - Introduction
0:19 - Noncognitivism
3:08 - The Frege-Geach problem
15:25 - A license for optimism
21:16 - Higher-order attitudes
31:02 - Objections to the HOA account
46:07 - Deflationism
53:24 - The "hiyo" problem