espritfaux

To put it simply, just because you can imagine something to exist(or that you can see it as possible) is not a reason to affirm that it does. Even if it were possible for those things to exist, to state that it does is quite a leap, especially without any demonstratable evidence. There are many possibilities out there, and many are more likely than ghosts, apparitions, poltergeists, etc. You shouldn't except things by default, possibility is not equal to truth. I hope that helps.