Axxman300
Philosopher
The difference between UFOs and ghosts is that nobody sees UFOs in their garage.
The atmosphere will distort and reflect images over a great distance, and sunlight makes distortion worse. Combine this with the fact that most people are unfamiliar with the sky and you get most UFO sightings.
In short: External input.
Ghosts are seen as a result of Internal input.
For example a security guard hears a familiar sound, and as he looks in that direction he is moving, and in that split second the visual aspect ratio changes making it seem as if a shadow moved before vanishing. The security guard combines the misidentified shadow with the sound he heard, and - if he believes in ghosts - comes away from the incident thinking he's seen one. Even if he doesn't believe in ghosts the guard is disturbed by what he THOUGHT he saw before correctly blowing it off as an active imagination.
The atmosphere will distort and reflect images over a great distance, and sunlight makes distortion worse. Combine this with the fact that most people are unfamiliar with the sky and you get most UFO sightings.
In short: External input.
Ghosts are seen as a result of Internal input.
For example a security guard hears a familiar sound, and as he looks in that direction he is moving, and in that split second the visual aspect ratio changes making it seem as if a shadow moved before vanishing. The security guard combines the misidentified shadow with the sound he heard, and - if he believes in ghosts - comes away from the incident thinking he's seen one. Even if he doesn't believe in ghosts the guard is disturbed by what he THOUGHT he saw before correctly blowing it off as an active imagination.