Can the forum's christians see the demons in other people?

[Strongbad]

God, being omniscient, knows whether John B would have accepted salvation in the absence of the demon, and can dismiss the demon based on that knowledge, or just save the man in the end despite the lack of an overt confession of faith.

And Superman, being super-powerful, can either fly so fast that he makes time go in reverse, or he can just use his laser-beam vision to destroy Lex Luther's bombs.