""I may be wrong," Trump said during a news conference after the meeting."
He then gave 2 possible options for how he would react to being wrong:
1) "I may stand before you in six months and say, 'Hey, I was wrong.' "
2) "I don't know that I'll ever admit that, but I'll find some kind of an excuse."
If you believe that Trump would select option 1 in the event he is wrong, you clearly have either not been paying attention to his Presidency or you are incapable of objectively assessing his behavior. Whether he was joking or not is irrelevant; it does not change the underlying truth of his option 2.