I think I'm confuse

"Clinging to a concept confines you, ties you in a knot, and imprisons you."

I implement the above line to the below,

"All compounded things are impermanent."

The above quote is a concept. I shouldn't cling to the concept. It doesn't mean I must refuse, but rather I should examine it first, and keep be open to others.

If the "All things are impermanent" is true, then the "All things are impermanent" is impermanent, because it is a thing. Therefore, sometimes, it's permanent. Something that sometimes is impermanent and sometimes is permanent is impermanent. Therefore, "All things are impermanent" is the final result.

If the "All things are impermanent" is false, then "There is at least one thing is permanent".

...
I think I should sleep.

Hmm... something is wrong.

If the "All things are impermanent" is true, then I can say the "All things are impermanent" itself is impermanent, because it is a thing. Therefore, there will be time when there isn't "All things are impermanent".
This mean, even the "All things are impermanent" statement is impermanent (I'm not talking about right or wrong, true or false). And the final is still "All things are impermanent" is true.

If the "All things are impermanent" is false, then there is at least one thing is permanent. But the one thing doesn't have to be this "All things are impermanent".

I really have to sleep now. Trying hard not to disappoint you, I must write my final thought for this crazy post,
"The only thing that is permanent is, all thing is impermanent". I think it satisfied both condition.