I just took a short walk. Fall is hands-down the loveliest time of year to work on a college campus — especially one with some years on it. The ivy rusting on the brick walls and stone towers. The morning dew pooling on the well-worn surfaces of flagstones and steps. And the falling leaves swirling about the students, sweatshirted and capped, hustling to class, tossing the football or lounging on the mall in the autumn sun. And here in Minnesota, even the trees wear maroon and gold this time of year …