Nov 23, 2011 #1 A amanda Active member Joined May 12, 2008 Messages 1,151 Reaction score 0 Points 36 Is this argument valid or invalid: "Either that's a poltergeist or something weird is happening in the...? basement. That's no poltergeist. So, something weird is happening in the basement." Why is this argument valid or invalid?
Is this argument valid or invalid: "Either that's a poltergeist or something weird is happening in the...? basement. That's no poltergeist. So, something weird is happening in the basement." Why is this argument valid or invalid?