If ever a problem seemed intractable, it’s homelessness. After many decades of trying to find solutions, there are still tens of thousands of homeless men, women and children here in New York City. But there are also many dedicated people who work day and night to bring shelter and badly-needed services to many thousands of homeless people who otherwise would have nowhere to turn. One of those dedicated individuals is Bob’s guest, Steven Banks, who has been leading, simultaneously, the city’s vast Human Resources Administration and the Department of Homeless Services, as the Commissioner of New York City’s Department of Social Services.