The distinction between "online" and "offline," between "digital" and "physical," once seemingly unambiguous, has begun to blur thanks to the ubiquity of smartphones and personal location data, ad and experience targeting, connected devices, wearable technology, the Internet of Things, and additive capabilities like 3-D printing. The biggest business opportunities for innovative experiences, according to digital marketing expert and "tech humanist" Kate O'Neill, will come from blending the physical and digital worlds intentionally to create a meaningful and integrated human experience. And to...