What Causes a ‘Ghost’ to Be Seen?

Sometimes people see ghosts because their brains are trying to make sense of something strange. Imagine you're in a dark room and you see a shadow that moves, your brain might think it's a ghost, but it could just be the light or someone walking by. Ghosts aren’t real, but our brains can trick us into thinking they are.

When we’re tired or scared, our brains work harder to find patterns in what we see. That’s why a flickering light might look like a ghost, it’s just your brain trying to figure out what is going on.