I am pretty sure the dead cannot communicate with us or influence the outcome of current events.
In my opinion, they exist in another realm, as parallel infinite possible variations of our reality with their own future and past.
I came up with a new theory which corroborates the idea the other day.
Think about the ghosts of Roman Legions. Anyone who has seen them says they only see them from the waste up.
The reason is, they are an echo through time and are walking on the surface of the Earth as it was way back then.
Hence their legs appear buried.
Now apply the same logic to the future.
The surface of the Earth will be built upon, the diameter of the sphere larger by who knows how much.
If you were looking at echoes through time from the future where would you look?
In the sky of course.
How far into the sky?
Who knows how much rubbish we can make in the next two thousand years.
So you see, it is simple.
The unidentified gets a classification.
Imagine for a minute the UFO spotters are seeing something else.
Ghosts from the future, driving in the sky.
See you on the other side of the looking glass,