When I was a preteen. I used to do logic puzzles.
The structure is as follows. You make a statement, then your assumptions. Then your conclusion. So if you follow the assumptions to heir logical conclusion your statement is logically true but it maybe false overall.
Men are taller than women. Serena is taller than me so she must be a man. Logically that statement is true. And it is verifiable, but it is also false.
So in arguments if the assumptions are not always true or the reasoning is faulty, the conclusion will be wrong.
I personally don't feel there are facts that you are easily verifiable, however that argument is about he scientific method which I am not prepared to either argue or discuss.