User blog:Tommy,Klaus&Kol2012+/how do ghosts/spiritual entities move, talk, etc?

again, i know its magic but i feel like ive said this before, what is actually happening before our eyes? Is it just an illusion?, cause i was under the impression even in supernatural terms, you cannot live, talk, move, etc. without gravity and a body, spiritual creatures seem to transcend that or are we just looking at a mirage?