Does this power work on me?

[Originally posted at Ana Mardoll's Ramblings where I went into significantly more depth.]

[On an interesting idea about how what Bella's mental shield can block is determined.]

Incoming power!

Do I think it's physical?
-[If yes, I it works on me.]
-[If no, I block it.]
-[If neither, request information from the sender.]

I have no opinion. Does you think it is physical?
-[If yes, it works on me.]
-[If no, it does not work on me.]
-[Otherwise, throw error 2005: Nature of power undetermined.]

Power accepted. You may now manipulate my emotions.