I am a happily married person, but I am simply thunderstuck when I try to explain something to my wife and she doesn’t believe me, and then a twenty-something sales clerk will tell her the same thing I told her... and it’s like Moses had come down from the Mount. No kidding.
Conversely, (and not always) I have to painstakingly unravel something somebody told her that she is predisposed to automatically believe, a sales clerk, a receptionist, a guy who told her “X”. She has gotten much better at discerning this stuff over the years, but I am still amazed at how readily she is willing to give credibility to some person I look at at and go, Huh?
Ditto here.
My husband does that so I know exactly what you are talking about. Even my kids notice it.