- "Pretend to be upset" - seems broadly possible?
- "Pretend to lift your right arm" (for a person who has the capability of doing this action ) - not sure if this is possible
- "All experiences are real (in the sense of actuality) experiences" - unsure how one would know.
So, what does it take for something to be "pretendable" (or perhaps if there's no such word, capable in a certain sense, of being either one of "pretend" or "not-pretend")?
Thinking about @jobermark 's comment below, the context is more about nonverbal appearance than misrepresentation. "For some - but not all - classes of action, experience or internal state x (and if necessary under what conditions) it is not possible to give the appearance to other persons that x is true, when x is false, because the fact of the falsehood of x necessarily precludes creating the appearance that x is true. Why is this and what conditions or classes apply?"