There are two kinds of people who buy old houses, according to The New York Times:  old house people, who know what to expect, and regular house people, who don’t.  But I would argue that there is a third kind of purchaser: the temporarily crazed but otherwise rational person who walks into an old house and suddenly decides to buy it because of a feeling, a sense — or in my case, the ghost of a dog that had been dead for more than a century.