an aside, ran across this on Trump's oneupmanship character trait in an unrelated Guardian/Arts interview with musician Nile Rodgers strikes me as just so "spot on", including as to how he conducts foreign policy, and just, well, everything:

Which brings him to Trump. “The first time I met him, I couldn’t believe what came out of his mouth. I was doing The Merv Griffin Show, and Merv Griffin has to be the nicest person you will ever meet. It was myself, Arnold Schwarzenegger and Donald Trump.” Before the show, Trump boasted to the two of them that he had whupped Griffin in a property deal. “He was talking about Merv Griffin in such a derogatory way, talking about how stupid he was, and we’re going: ‘Do you think we’re going to think, “Oh wow, that guy’s a really smart businessman, he must be the smartest guy in the world.” We’re not thinking that. We’re thinking: ‘If you believe you took advantage of Merv Griffin, you should not be bragging about that because he’s the nicest guy in the world. You should feel like a jerk and should shut the hell up.’”

Has he met Trump since? “Go on the internet. You’ll see him taking pictures with me all over the place. He was that kind of guy. He used to take pictures with anybody who was happening in the 70s and 80s, and then he’d call the press ... At the time, I was going out with the crown princess of Yugoslavia so you’d see tonnes of pictures of him behind me.” He pauses. “He’s a builder, but I bet you he doesn’t even understand junior high school geometry. I bet you if I talked to him about Non-Euclidean geometry he’d look at me like: who’s Euclid? Hahahaha!”

(I would like to add to it that I looked it up and in actuality, what happened later is that Merv appears to have trumped Trump, in a really smart bankruptcy maneuver, a much smarter cookie. So just another example of Trump modus operandi where he thinks people who appear friendly and nice are dopes to be fooled when it turned out to be the other way around.)