After my recent inactivity, I finally gave everything some thought and I think I have something that may be contribution worthy to this site as I am likely not the only one.
I am aware of this question, but I don't think it's necessarily within the scope of my concern: What's the term for people who think they suffering from imposter syndrome when in reality they *are* imposters?
I am wondering the difference between whether someone suffers from Imposter's Syndrome vs. actually being out of their depth. I'm not going to say someone out of their depth is an "imposter" per se since I think that's rude and is somewhat snobby. The question that was also asked by the original questioner in the old post passed judgment on that other person as well and I think that's unfair. I also want the scope of my question to apply to those at the Ph.D level as well.