More generally, I don’t think any argument that says one is wrong about what they want holds up.
Just to be clear, you don’t think one can be mistaken about what one wants? Does this only work in the present tense? If not, the statement “I thought I wanted that, but now I know that I didn’t” generates a contradiction—the speaker must be actually lying.
Well, in everyday usage people use the expression the way MrHen put it. If you want to define it like that, then yes, you can be mistaken about what you want.
Just to be clear, you don’t think one can be mistaken about what one wants? Does this only work in the present tense? If not, the statement “I thought I wanted that, but now I know that I didn’t” generates a contradiction—the speaker must be actually lying.
Well, in everyday usage people use the expression the way MrHen put it. If you want to define it like that, then yes, you can be mistaken about what you want.