Who's a ghost? Why? Detail point

This question is untenable and contradictory. First, only one is a ghost, so which one is a ghost? Substitute it in, and the son asks his father if there are ghosts in this world. Dad's answer is no, son said our nanny said there was a ghost. Dad's reaction was to pack up and leave the house, so he couldn't stay. First, dad's reaction is wrong, because normal people's reaction should be to run out of the house, not to pack things. Another thing is that my son has to pack up and go back to his room. This room is his son's. Why did he see the nanny in his son's room when he saw it? Not the living room? The nanny is packing in her son's room. No, and the father told his son to pack things instead of asking him where he saw the nanny, which shows that the father knows that the nanny is a "person". Suppose the nanny is a ghost. When the son asks the nanny what you really are, the nanny is in a trance, which generally implies thinking about things and thinking about trance. Why are you in a trance? What did the nanny think of? Only memories. Is there anything memorable for the nanny? It can only be "dad" After the memory, the nanny said to her son, "Your father has been dead for four years." There was time here, and then my son froze, unconsciously fell to the ground and smashed the vase. Why does the son freeze? Can only say that the son knows that "Dad" is not a person, so "Dad" is not a person, and the nanny is a person? The biggest problem is coming. Everyone passing by the house said, "This house has been unoccupied for five years." Note that it is "five years". So it can be assumed that the family moved away five years ago, why did they come back five years later? What if it's possible? "Dad" moved out five years ago because of something, and it was abandoned. The first is that it can't be sold. If it is sold, it will be occupied, but if it cannot be sold, it cannot be rented. It can only be owned by its owner. Then he died a year later, and then he hired a nanny to take care of his son. After living outside for four years, my son still couldn't accept the fact that his father had died and moved back to live. After moving in, he met his "father" and began to live a normal life with his father. Because it came back five years later, passers-by said it was abandoned for five years (illogical).