Are you curious about what other people think of you?
Do you care one way or the other? (Why or why not?)
Are their perceptions of you usually accurate?
I had a conversation with an ESTJ once who found it puzzling that I was even curious as to how others perceived me. I think most INFJs find that they are often misperceived but in very different ways. I think for me it does matter because I care to some extent what people think, although sometimes it is just a source of amusement.