This kind of thing is really annoying. It's too frequent of a picture when I come to a meetup and someone gives a presentation, yet he's constantly interrupted

This kind of thing is really annoying. It's too frequent of a picture when I come to a meetup and someone gives a presentation, yet he's constantly interrupted by an obnoxious audience member who's hell-bent to insert himself into the conversation. This fellow will always proceed to correct the speaker, while foaming at the mouth, with one goal in mind: to show to everyone in the audience how right he is, how smart he is, and how much better he knows this stuff than everyone else, including the presenter. This kind of thing really pisses me off because it serves as a basis for stereotypes. Most programmers know how to behave themselves in a social setting. But based on these few who really have no clue, stereotypes are born and thrive, and make things difficult for the rest of us.