I want to write for history, not for the moment.

I want my books to last, to stand the test of time, and to do that I focus on the forces that shape the subject - the cultural and sociological geography - to capture them in a way that will explain them no matter what they are doing.

Well, there were several things. One was that the industry itself built in Detroit was abandoning the city - taking factories elsewhere, the corporate headquarters elsewhere.

My favorites are Stevie Wonder and Marvin Gaye, but those are a little off in terms of getting Detroit right on the head. But of course, you know, "Dancing In The Streets." You can't forget the Motor City. And we can't forget the Motor City.

It seemed that I could tell the whole story pretty powerfully in those 18 months between October of '62 and the spring of '64 when they were all at their peak. And yet you could see some of the shadows of Detroit's demise coming.

So, I mean, there's still vast swaths of the city that are suffering from a lack of jobs and poor housing and poor public schools, but they are building momentum - you know, techies, foodies, artists, musicians, all coming to Detroit. So there is this vibrancy. You see it in the newspapers every day - some story about the new Detroit.

And that John F. Kennedy uttered the first variation of "ask not what your country can do for you" in Detroit on Labor Day in 1960. So Detroit was really central to Democratic politics United States. Every Democratic candidate would start their fall campaigns in Cadillac Square.