Logic

If I'm asked "Do you have an opinion about opinions?" I cannot say "No" because then I would be expressing an opinion about opinions. Therefore isn't it impossible not to have an opinion about opinions?

Comments

Clever! This kind of query

Clever! This kind of query touches on a topic that some philosophers of mind engage having to do with the topic of what they call "higher order thoughts." Basically, it is one thing to have thoughts and then (supposedly) another matter to have thoughts about thoughts. This sort of thing comes into play when reflecting on nonhuman animals --some concede that some mammals have thoughts (perhaps even knowledge) but they do not have thoughts about thoughts (or knowledge of their knowledge). From this standpoint, it might be possible to have opinions but no opinions about opinions. Higher order thoughts also come into play in theories of action and, more specifically, freedom and responsibility. Theories of consciousness also involve reflection on higher order thoughts.

Back to your topic of opinions about opinions: In the case you raise, when a person is asked if they have an opinion about their opinions (or an opinion about opinions in general), there may be a practical implication that the person's response would itself entail having an opinion about opinions (even if the opinion is that the question is silly).

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