Although I think many recent cases show some jurists are stupid, I do not think anywhere near all of them are. I just got a summons to appear for jury duty (this is the first one since I've lived here for the past five years). I am disabled and, if I am chosen, I will have some difficulties, but I have no intention of asking to be excused. I feel this is my duty as an American, so I will not shirk this opportunity like so many others do.
Perhaps the reason it seems so many who serve on juries are biased or ignorant is that the rest of the people who could make a huge difference in our justice system look at this call as a nuisance and do anything to "get out of it". If we don't do what we are asked to do to ensure others are judged fairly, there may come a time when we, ourselves, are faced with needing a "jury of our peers" and only those who are "stupid" will be sitting in our jury box.
My experience was during selection the first question was “Are you a college graduate?”. The defense wanted NO educated people on the jury.