Imagine I would tell my wife, that whenever we have a discussion, her opinion would only be valid when she can explain how she arrived at her conclusion.
Your wife is one of the end products of cutthroat competition across several billion years so let's just say her general intelligence has a fair bit more validation than 20 years of research.
Well, for what it's worth, I believe that this evolutionary pressure works as strongly, or even more so, against women who challenge men about the validity of their reasoning.
Imagine I would tell my wife, that whenever we have a discussion, her opinion would only be valid when she can explain how she arrived at her conclusion.