Do you know someone who is a "know it all" who is wrong often?

Quite a few. Sometimes I am even prudent enough to just shake my head and bite my tongue. More often, it goes badly though.

I find that know-it-alls are more often wrong than right. Yes, I find these people annoying, and whether I ignore it or argue depends on who it is.

Nah, doesn’t happen does it?

Some of my teacher. They thought they were always right and tried to force us to think like them but I could spot their faults. Mostly I just ignored them as if I didn’t know, because what was the point of arguing?

Fortunately, I can’t think of one person who is like that.

I am never wrong.

My mother, who would fly into a fit of rage if you persisted in questioning her perspective.

And my mother-in-law who will pretend to be having a nervous breakdown if you debate her too much.

I don’t see my mother any more and restrict conversation with the mil to small talk about the weather or some such.

Speaking!

I thought I was wrong once, but I found that I was mistaken about that.

My fiance is a bit of a know it all. I don’t think he means to come off that way but when he says things, it sounds like he’s absolutely sure, no doubt in his mind that he’s correct. If you start questioning him though, his certainty starts to falter. Thankfully he’s not one of those in your face type of know it alls who stick their nose in your business and shove their opinion down your throat. Does it annoy me? It used to but I’ve just learned to laugh it off as one of his quirks.

Look up the Dunning-Kruger effect.

My younger daughter is like that but she is usually right . Brat.

@osoraro I learned something new, thanks. I like this quote from Dunning and Kruger: “the miscalibration of the incompetent stems from an error about the self, whereas the miscalibration of the highly competent stems from an error about others”.

Yes, I have a friend who likes to cook, and likes to have long discussions about it, but he’s constantly wrong whenever he mentions nutrition or health. He’s extremely gullible when it comes to reading things on the internet

Several, unfortunately. Those people tend to gravitate to auctions. I think it’s because they have a varied, captive audience.

I usually pick one of the stupider things they say, and pounce on it. “I don’t believe that for a minute, and if you would stop to think about it for a half of a second, you wouldn’t bother repeating it.” They tend to avoid me, thereafter.

I Have no idea what you mean. :)

I have a smart but fantasy-prone neighbor. I like her a lot, so when she goes off on some
goofy theory – she’s very assertive about these – I get very silent. I have no idea how this
feels to her. It’s never going to be discussed.

YEAH!

I was hoping that @KNOWITALL would show up for this question!