Anyone who claims to have seen a ghost might say that there is proof of spirit life, but skeptics would argue that any ghostly sighting can be explained away by lighting tricks or other logical reasons. At the end of the day, there may never be indisputable, tangible proof of ghosts. While ghost hunters have electronic tools meant to measure ghost activity, results are open to interpretation. Yet, we believe in ghostly encounters and phenomenon – that when things go bump in the night or move suddenly, a ghost can be the cause.