Are Ghosts Real?

In my experience and knowledge of energy, I’ve found there are many reasons for the phenomena of ghosts (or what we call ghosts), and this blog is not an explanation regarding all.

I will not say that a ghost or an entity of some type can never exist; but if they do, they are very rare. So, why are there so many people convinced they have encountered a ghost, or that a loved one who has passed on is trying to contact them?