You'd think they'd remember-- yes, last time there really was a ghost, or a witch or whatever... But each time, they just find the whole idea preposterous...
It's like it's a survival mechanism for living at Collinwood. If you don't talk about it, you don't have to deal with it.
...David replied that it was pretty much like living "in any other house." He's gotta be kidding!
It is obvious that the people leaving at Collinwood do not react normally to strange situations. Actually, those supernatural characters seemed to have more of a pulse. Like yesterday, it look to be an oh hum from Liz when Vicki said Jeff went back to the 18th Century. Please add to the list of those shocking yet passive moments on DS.