Class is in session [open to students]
This was the only hypothesis Bruce could formulate to explain why he was sitting in an office on a school campus in a city, when just last night he was sitting in a Greyhound station, eating from a discarded bag of corn nuts. His hypothesis further supposed that the military had finally tracked him down, kidnapped him while he dozed on the bench, and placed him in some kind of idyllic environment where they could monitor how he performed under a variety of stresses. It was like that British TV show, the Prisoner, except he had his own name - the UCLA diploma on the wall read "Dr. Robert Bruce Banner, PhD., nuclear physics" - and there were no giant, menacing, white balloons to be seen.
Not yet, anyway...
Shaking his head and throwing his arms up, he sighed. "Oh well. Might as well show them what a super-scientist is good for." He gathered up his laptop - syllabus, powerpoint presentation, everything a good teacher ought to have for the first day of class - and walked in what he hoped was the direction of his classroom.
After a number of wrong turns, he finally found the room number indicated on his syllabus and stepped in. The room was a large, amphitheater-style array of predominantly empty desks. A smattering of students were in attendance. He eyed them suspiciously as he set up his laptop on the podium.
"All right," announced the professor, folding his arms, waiting for the class to act, "who wants to know the secrets of the universe?"