Im probably one of the most logical people on the planet.
Every action i make or word i speak is carefully chosen. Even my "religious" beliefs are based off the idea of logic, and probable outcomes.
But i do believe in spirits.((to an extent))
To outright say, "NO IMPOSSIBLE CANT HAPPEN EVER NEVER EVER NEVER", is a fools game.
What i believe is that "ghosts" and "spirits" are more of an "echo" in energy then a spiritual thing.
Its proven humans are constantly giving off energy fields. ((kirlian photography is the art of capturing these energy fields given off by humans.)) Scientifically, it is possible for these fields to make "echos" in spacetime, via a ripple effect. ((dropping a coin in a fountain))
One of the basic concepts is that any object has its own position in spacetime. ((including the energy given off by humans)) There by it is possible for the energy given off by humans during traumatic events ((when the energy field itself is at its peak)) to create an "echo" in spacetime.
This would explain several phenomenon, such as the cold air ((from the energy manifesting in a single location, drawing heat as a catalyst)), the appearance of ghostly "mist" ((water particles in the air reacting to the sudden increase of energy)), and the movement of objects ((because energy does have mass, its possible for it to move objects. And because it is a form of energy, it can leave red spots, and irritation on the skin. As said to happen in many ghost storys or events))
While this assessment of spacetime and the effects of human energy may not be 100% on the money, its the most logical belief i can have on the matter of "ghosts", because to say they dont exist at all is something any 100% logical person knows not to say.
So i believe, yes, they exist, but not as most people believe in them.