I don't know about that but I do know that both prosecutors and defense attorneys don't want people who have much knowledge.
During jury selection they're always asking questions about your area of expertise. If the trial is about the internet, for example, then the last people who would be selected for jury duty would be people who know anything about the internet.
You said that, I didn't. I made a statement earlier last week, and I said that "I wish I could play stupid and get selected on this jury." You are 100% correct in your assessment -- those who get selected for jury duty these days are those who aren't smart enough to get out of it.