When new businesses open that are trying to attract people with cultural capital or cultural ambitions, they are often more expensive than traditional neighborhood stores and cafés, they offer different products, and they have a different atmosphere. Longtime residents may feel uncomfortable there. Structurally, as a group of gentrifiers gets bigger, there is less room for longtime residents. When it becomes a pattern and you can see the effects, we call that displacement.

No matter how many rich people call New York their home, we don't really have enough capital here to build and maintain the infrastructure that a population needs to live. We don't have the federal money, and for-profit investors are just not interested in anything other than making the biggest profit they can.

There are masses of people who need affordable housing in New York. I think that, politically, it is very difficult to give preference to artists over another group. Now, could there be an impressive envisioning process where developers would be asked to collaborate with urban designers? Maybe envision a large-scale development with local shops, dense housing, maybe a few towers, maybe a few mid-rise buildings, and art workshops in the mix? That would be great. I don't see a call for those proposals. But I think that it would not be outrageous to propose that kind of vision.

I think the entrepreneurial activities that make art visible and attractive are what lure people into the amusement park that SoHo has become or that Bushwick or Williamsburg has become. It's not that outsiders come to an area because they hear artists are living there. A lot of people came who were not that interested in living with artists, but they were interested in living like artists and socializing the way that they thought artists socialized.

The existing American laws we use in a pinch just do not adequately protect artists or any other group of rental tenants. For example, artist certification. You can always get around that. Every society that does not want to really protect tenants' rights tries historic preservation. But that says nothing about the right of people to stay in their homes. It says that the building cannot be demolished. But it does not say who is allowed to live in the building.

Artists have been used over and over again since the early 1980s as the legitimizers of a neighborhood in New York. And entrepreneurial artists, meaning people who themselves start out as painters, musicians, dancers, and who open a café, a bar, a restaurant, or even a co-op art gallery - they unintentionally develop the kinds of attractions that bring the middle class with some kind of cultural ambition.

I think that there is a middle-class desire, and maybe an almost universal desire, among many human beings to live in clean neighborhoods, among people like themselves, around people with whom they feel comfortable. That can be exclusive, it could be exclusionary. It could be racist, classist, genocidal, and so on. Most people like comfort. Now what provides a sense of comfort varies. I do think that people who like living in cities like small-scale human interaction and they like the social dimensions of aesthetic diversity that Jane Jacobs wrote about.