The wind gave a piercing howl, rattling the windows of Professor Jack Lange’s apartment. Jack lowered his book at the sound and stared out at the blowing snow."Wow, what a storm!" announced the disc jockey on the radio as if he, too, had heard it, "If you don't gotta go out, don't go."Jack turned off the radio. The storm had given him a rare day to himself, so he wasn’t especially unhappy about the weather. The campus was...