An educated man is summarily excluded from jury duty.
I imagine that this is typical. A good lawyer will reject anyone who might have any knowledge or ideology that will bias the case. But any well-educated person will develop knowledge and a set of theories for analyzing the world. The only way to ensure a jury that approaches the case with the idealized 'blank slate' is to choose those with as little education and life experience as possible. No wonder that jury verdicts get so ridiculous.