<p>To be perfectly fair, 61st and Ellis isn’t a place many undergraduates will ever see at 1:30 am. At least until they finish building the new undergraduate dorm at . . . 61st and Ellis. It’s not exactly in another world. And 57th and Ingleside, where the two women were mugged, is pretty much in the heart of campus, right near the 24-hour science library. This wasn’t a good weekend for the University.</p>