I should have counted the steps from the Herald. It couldn't have been many. It was no more than a five-minute walk. And yet the walk took me to the other side of the world. The Pine Street Inn isn't on Pine Street. It's on Harrison Avenue, in an old building that looks like most old buildings in this city, brick on the outside,cinder block on the inside. I arrived there with preconceptions. The homeless are alcoholics, drug users, people who have…