Thanks to language, we can talk about our internal states, and we have a rich and reliable vocabulary with which to do so. Not that this vocabulary, or communication more generally, is perfectly reliable: my communications require your interpretations, and, as with other interpretative processes, this one can go awry. Maybe I’m deliberately trying to deceive you. Maybe I’m so lacking in self-awareness that my reports about myself are not to be trusted. Or maybe you and I just have different understandings of linguistically identical statements. To me, “I’m really stressed out” might mean “ask
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