If ghosts were a force, wouldn't that make them more realistic? If I said that ghosts are real, you would probably not believe me without proof. These are things beyond explanation and facts. People over time have always narrated their ordeals with what they conceive to be ghosts. I like to think that ghost are real although I haven't had any personal experience. This brings me to reasoning that you can only know for sure when you have an experience. I've seen on documentaries where paranormal activities believed to be of ghosts were recording on some sort of device. You might want to think that it was staged. No doubt there are many unexplainable things that have happened. Words of the mouth can't tell you whether ghosts are real or not. You need personal conviction to believe it or not.