Can a ghost communicate with the living, or the living communicate with the dead?
This is another of those “yes or no” questions. Many mediums claim that they themselves can communicate with the dead. Unfortunately, this is very hard to prove. There are many mediums in the world, who seem to be able to know things that nobody else knows. Some of them have even helped the police solve unsolved cases. We don’t know enough about the afterlife, to come up with a valid answer.