Movie Talk

[SPOILER ALERT!]

G'day mate! I'm back! Before jump to the point, I just wanna say Happy New Year 2017
I hope I can graduate soon, get a job and get a life (but I'm very lazy though)
As usual, movie in 2017 is what I've been waited cos I'm a movie maniac
But recently, I just re-watch some old movies to relax my mind
If you love twist-ending movies, you must be familiar with these

Yes, they all ended with the same ending. Two of 'em are legends
My reaction was like "Kewwl.. I was watching a ghost the whole time and I like it so much"
But at the other side, I feel terrified too. Really, terrified.
The main characters didn’t realize they're already dead and I keep wondering about that
Is that really possible in real life? Why there are so many movies like that?
Seriously, it makes me pray "Please god, I don't want to be a ghost if I'm dead" after watch 'em all
Then I search on google to make myself sure that it was just a movie not a true story and sometimes I become a fool when I'm scared

Guess what I found:

According to some research by mediums, "there are cases when a person dies that they do not know (or comprehend) that they are dead. Especially in "quick death" (murder, car accident, suicide, etc)" (William, 1918).

"In fact, for some ghosts, it seems that dying is something that is very hard to notice or remember because they have no idea that they're actually dead" (Bricken, 2015).