And apparently there are ghosts in the world as when Jesus appeared to his disciples after His resurrection from the dead, they thought he was a ghost. He didn't shoot down their belief in ghosts...He persuaded them that the ghost-definition of the time did not fit the bill. Too, Jesus had that knee-slapper about the camel going through the eye of a needle. Like reading Shakespeare or listening to it...you get the feedback from the other actors who, though w/o dialogue at the moment, do laugh, cry, snort, and make all manner of noise not recorded by the bard.