do you believe in ghost?

Ghosts are not real. They are simply your mind playing tricks on you. Think about this: if you did not know what a ghost was, and you heard a noise you did not know you would go check it out only to not know what caused it. End of story. Next, let's say people know what ghosts are. They hear something they do not know, and decide to go check it out. Before looking they are already spooked by the fact that they know what a ghost is. Then, the finishing fact for them is what they see. If they see a shadow of someone else, or even those particles you can see in the air move in a certain pattern, they just assume it is a ghost. That is my input, hope you enjoy it.