Dean Daniel B. Rodriguez sat in front of an audience at Northwestern University School of Law and gave his predictions of the future of legal education at his school.He was speaking as part of the first panel of an all-day conference the law school hosted Wednesday called “Bridges not Barriers.” The conference examined the relationship between the law and the so-called STEM fields — science, technology, engineering and medicine.The moderator of the first panel, Esther S. Barron, director of Northwestern …