This is just a minor end-of-thought speaking affectation. I've never really been bothered by it. John Carmack has an even more characteristic "um" which comes out like the word "I'm". That honestly did bother me at first, but you get over it after a while.
Not a big deal unless you're really worried about your first impression. Once you're where John Carmack or Paul Graham is, that's not an issue.
I recently noticed that Chuck Klosterman's delivery sounds a lot like an excited Paul Graham. He's a good model for what Paul would sound like with more flow between individual thoughts:
Not a big deal unless you're really worried about your first impression. Once you're where John Carmack or Paul Graham is, that's not an issue.
I recently noticed that Chuck Klosterman's delivery sounds a lot like an excited Paul Graham. He's a good model for what Paul would sound like with more flow between individual thoughts:
http://www.youtube.com/watch?v=3yTwbga3lGM#t=39m10s