- Put yourself in their shoes
- Think of times you’ve been in a similar situation and explain your reaction
- Can the behavior be explained by a more “universal” model than a person-specific one?
- How are they empathizing with you, given they are projecting?
- How are they empathizing with you, given what you know about how they perceive others?
- What successful model have you used to explain similar behavior for similar people?
- Is your conclusion affected by your attitude towards the subject?
I guess where you and I differ is that I don't consider those mutually exclusive. If I'm stating something which I know to not be true, I'm lying. I may also be doing other things (e.g. stating a prearranged signal like "the eagle has landed"), but all that - "being weird", "performatively illustrating a position" etc. - doesn't mean I'm not lying.
Yeah. I mean-- usage sometimes differs. I don't want to make this exactly a definition debate. But look at how Vaniver used the word:
That usage suggests to me a meaning of liar that implies deceit (though Vaniver later said he didn't mean to imply that).
I do think it would be a social/linguistic error to respond to weirdness, joking hyperbole, or sarcasm with with "Liar!" or similar variant in a sincere tone.