9Kirk: He Manipulates People’s Assumptions
Because Kirk is basically a playboy who thinks with a different organ than his brain a lot of the time and has a reputation for being reckless, a lot of people assume that he’s brash and irresponsible and unintelligent. But he’s just smart enough to manipulate that and use their assumptions
about him against them. Remember, he managed to beat Spock at 3D chess on a number of occasions, because Spock underestimated him and he knew it, and so he used that to his advantage. Kirk put that mental skill to work a number of times as the captain of the Enterprise.