In the interview there is a really good line about his book and the bleakness of his near future world with its overpopulation and unemployment...
"Well, when you have overpopulation, that's what you have. If you have jobs for all those people, you're not overpopulated; you're just densely populated. But if you don't have jobs for those people, then you are overpopulated..."Oh yeah, In the world of "Home Fires" the cruise ships are all powered by sail...