spike's views, of course without the profanity. why would we encourage gentrification, predatory lenders, buyers, racketeers making home ownership most costly, will accelerate normal cycles drive up evictions and yet a recent "new york" magazine article asked the question, is gentrification all bad. the ought thor looks at this way, it doesn't need to be something that one group inflicts on another. so the question is, does the down side outweigh the up side when the affluent move in? to help us answer that question, we brought in an expert. lance freeman, associate professor of urban planning at columbia, and the author of "this goes the hood." what is it about and why did you write it? >> thanks for having me. my book is about the issues you