Ghosts as a phenomenon aren't really falsifiable, so there's not much point trying to make unequivocal scientific statements about them, if they exist. If there

Ghosts as a phenomenon aren't really falsifiable, so there's not much point trying to make unequivocal scientific statements about them, if they exist. If there's something we can measure or some phenomenon that multiple people could elicit reliably then it would be an answerable question. But they're supernatural precisely because there is nothing to study scientifically. It's just some qualia that people interpret to be ghosts.