" New technology or opportunity. When everyone started using smart phones, new markets cropped up for app developers, case manufacturers, and so on. But the obvious answer isn’t the only one: Makers of nice journals and paper notebooks also saw an uptick in sales, perhaps in part because of customers who didn’t want everything in their lives to be electronic. "

― Chris Guillebeau , The $100 Startup: Reinvent the Way You Make a Living, Do What You Love, and Create a New Future