Everyone's got their thing, you know?
Carrie four houses down is really good at making fresh pressed juice; Your dad's friend Marco is pretty swell at sanding and staining antique furniture for his Etsy store; your ex-boyfriend Brad is...um...he's good at...uh...he's got his thing. I'm sure someone will figure out what it is.
The point is, not everyone on this earth is destined to be the next Albert Einstein, and that's okay. You can be smart in some ways and less smart in others (or smart in neither, like Brad), but it doesn't mean that you're any less worthy of respect (except for Brad).
However, it does mean that sometimes, you've got to ask for a little help when you get in a situation in which you have no clue what the heck is going on. The following people unfortunately didn't take this advice, and now have to wear their poor critical thinking skills like a badge of honor. Unless you're Brad, this level of stupidity just can't be beat.