I was a grad student at Harvard... let me correct a few things. First, Wilfred Schmid would probably never be called Willy. It's a funny idea though. Like calling the Queen of England Lizzy. He wasn't the dean... he might have been the dept chair at the time. As for living/sleeping at the office -- it's not a "terrible taboo and social stigma in America". (I'm American). But it's not allowed due to problems with hygiene (no showers in most bathrooms), smell, clutter, disruption at odd hours, etc.. So it's not allowed in any workplace. When it happens, the response of most departments is sympathy and an effort to find the cause and find the person a place to live. And grad students at Harvard are financially supported well enough to afford a decent room in the area. I mean... I wasn't rich, but lived comfortably in apartments shared with a few other grad students.