Factuality
When something is so obvious, even a blind person could see it. It’s like the truth was yelling at you.
"This is so true, even my dog knows!", said by a person who just saw the most obvious truth.
"This is so true, even my grandma knows!", said by a kid who just got told the most basic fact.
"It’s so true, I could write a book about it!", said by a person who just saw a simple fact.