Yeah, "I doubt that" is a claim set in concrete that requires support, whereas "A possibility" requires no support for any claim at all. I made no claim about

Yeah, "I doubt that" is a claim set in concrete that requires support, whereas "A possibility" requires no support for any claim at all. I made no claim about greater moral fiber, but if you think that past generations didn't "make do with less", you're now making an extraordinary against-the-grain claim. So, "give us a citation proving why you should be suspicious of that comment". See how annoying that is?