I am 22 years old and I can see ghosts. In fact, I don't like to use the word ghost to describe them. Because they were flesh-and-blood people before they passed away. They once lived the same life as us, eating human food, listening to music, playing on mobile phones, watching horror movies and discussing how afraid of ghosts they were. But now we have gone to another dimension, another dimension parallel to ours. So I prefer to call them "spirits".