Orin, I went to Maryland a long time ago (Physics) and can understand your professor's desire to get in some late night work. It was always much quieter then. In the Physics building, at least, you were not lonely late at night, but you could always find a place to work undisturbed. I used to go out for dinner (usually pizza) next to campus. Then I would get a bumper bottle (quart) of beer on the way back. Somehow it was legal to have open alchohol containers on campus. Those of my professors who were there late (usually a few) would often come by with a glass. It was a bit strange, but fun.
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