What's the simplest thing humans are too dumb to grasp?
You ever see a dog that's got its leash tangled the long way round a table leg, and it just cannot grasp what the problem is or how to fix it? It can see all the components laid out in front of it, but it's never going to make the connection.
Obviously some dog breeds are smarter than others, ditto individual dogs - but you get the concept.
Is there an equivalent for humans? What ridiculously simple concept would have aliens facetentacling as they see us stumble around and utterly fail to reason about it?
Intentionally blank page: Many documents contain pages on which the text "This page intentionally left blank" is printed, thereby making the page not blank
Thats not a paradox. The pages are blank in terms of the topic of the book, and the note is to inform you that it’s not a mistake.
It's not particularly confusing, but there are a whole class of paradoxes that rely on the same mechanism -- the truth of a statement is being altered by the existence of the statement, because it is self-referential in some way.
I think that the Berry paradox is the first one of these that I ran into, and it's a little more confusing to most, I think.
Probability is a big one for me that I can't wrap my head around because the rules just don't seem to line up with reality. Like, if I roll a die 10 times and get 6 all 10 times, what is the probability of me rolling 6 again the next roll? It's 1 in 6. But that's insane. I just rolled 6 10 times in a row. That's so wildly unlikely, it feels wrong that the odds I'd roll 6 again are only 1 in 6.