Historians will tell you that the past can often have a direct and profound effect on the present age. Take Magda Teter, for example. A scholarly probe into post-Reformation Europe recently led the professor of history and director of Jewish Studies at Wesleyan to an event that may have changed the course of Jewish and Christian relations in Poland. “This is how scholars can sometimes play a role in getting people to talk to each other,” she said. “It didn’t start that way, but that was the good result.” Sandomierz, a sleepy Renaissance town in southeast Poland, (now known in…