Yeah. I remember when he showed up at JPL to hog the limelight.
I remember watching an oldie (he looked young) on the local PBS station years ago, 1970s, in which Sagan was “explaining” red shift and blue shift, but kept having to go back and correct himself. In that book I quoted, I found a long contribution he made, right in the middle of one of the panel discussions (it is mostly a transcript of sorts) but it was followed by an asterisk. The footnote stated that he hadn’t actually said it at the time, he just thought of it while “editing” and stuck it in as if it were done live. The footnote didn’t mitigate this.