I think sometimes in situations where we've lost someone that meant a lot to us our mind has a hard time coping with the loss and your mind plays tricks on you, for a lack of better explanation... Because you still really want them to be there in flesh and blood so your mind thinks they're still there and tries to make your memories reality again?

I hope you all understand what I'm trying to say, lol.

I don't believe I have ever personally seen a ghost or apparition, I have some weird events that have happened, but they could have all been because of strong emotions at the time. I'm not quite sure how to say it hehe