In response to:

Is Our President a Bit of a Jerk?

The laugh line here is the paranthetical "You have to think three or four sentences ahead,' he told one reluctant pupil," when it is obvious watching him talk off-the-cuff that he cannot even think two or three words ahead.
At law school, few people knew Barack Obama really well, and I wasn't one of them, although we did have some dealings when we overlapped The Harvard Law Review.

But in the run up to the convention, it's clear that there are people who have had extensive dealings with him -- and they don't like him very much.  Two themes have emerged from news coverage in the last two days, and they are revealing:

(1) He's selfish: