Usually when people think or act like they know it all, they know very little or anything at all. And sometimes they know that they don’t it but they make themselves feel more adequate by acting like they know it all. So if they are occasionally right it’s ok to make them feel better by acknowledging it or just nod. Or just ignore.

My sister in law likes to “teach” others about specifics of higher education even though she never stepped her foot in any educational facility beyond high school and we all have a minimum of Masters degree. She never held any job besides occasional part time long ago. She still acts like she knows better about jobs too. She doesn’t. Her arrogance has no basis. But it’s fine. We ignore it. Her own kids roll their eyes. She is a good person but this nonsense cracks me up