Why he was so tense.

I watched recently Steve Jobs - i admit - a bit late after the hype, but some people have the problem with the film that Steve was a bit too much of an *beep* too rude, too intense. Well I think part of the reasoson is that yeah we know that he waas kinda like that but also was accelerated by the fact that all of these moments happened minutes beofre a presentation, a product launch. Which is very intense moment even without all these key conversations and meetings. And combining this with this very strong trate that Steve Jobs had gives(atleast for me) good exsplanation why he was so rude.