Chicago Sun-Times (Opinion, Dec. 10) -- “What unique perspective does a minority student bring to a physics class?” Chief Justice John Roberts asked during oral arguments of Fisher v. University of Texas, a case on affirmative action brought by a white student who says the university denied her admission because of her race. I posed Roberts’ question to Illinois physics professor Philip Phillips, an African American well regarded internationally for his work in a field that would leave most of us dizzy because of its complexities.