I think Captain Kirk has a PBAoE anti-IQ aura which has a compounding degenerative effect on his enemies' ability to make rational decisions. I'm not sure of the range, but I would say it has an effective range of 30 km, possibly farther? Additionally, it can penetrate walls and even space.
Before the effects of the aura have compounded, his enemies can usually capture him or his ship within minutes. This is where Spock's logic comes in the most handy - to keep him alive long enough for the aura take effect. But by the end of the episode, Kirk can usually overthrow the government and get the girl regardless of how cockamamie his methods are.
Before the effects of the aura have compounded, his enemies can usually capture him or his ship within minutes. This is where Spock's logic comes in the most handy - to keep him alive long enough for the aura take effect. But by the end of the episode, Kirk can usually overthrow the government and get the girl regardless of how cockamamie his methods are.