Most simply, 'present shock' is the human response to living in a world that's always on real time and simultaneous. You know, in some ways it's the impact of living in a digital environment, and in other ways it's just really what happens when you stop leaning so forward to the millennium and you finally arrive there.

Fantasy sports went a long way toward developing the sabermetrics formulas used not only by oddsmakers but general managers in hiring players. So the amateur fantasists ended up creating some of the algorithms that Oakland GM Billy Bean's statisticians used to win games with less salary money available for star players.

The hours Facebook users put into their profiles and lists and updates is the labor that Facebook then sells to the market researchers and advertisers it serves.

The tribal community lived in the totality of circular time; the farmers of God's universe understood before and after; workers of the clockwork universe lived by the tick; and we creatures of the digital era must relate to the pulse.

Jobs, as such, are a relatively new concept. People may have always worked, but until the advent of the corporation in the early Renaissance, most people just worked for themselves. They made shoes, plucked chickens, or created value in some way for other people, who then traded or paid for those goods and services.

Files on iTunes - and thus iPods - are incompatible with everything else. Applications on iPhones may only be sold and uploaded through the iPhone store - giving Apple control over everything people put on to the devices they thought they owned.

Most simply, 'present shock' is the human response to living in a world that's always on real time and simultaneous. You know, in some ways it's the impact of living in a digital environment, and in other ways it's just really what happens when you stop leaning so forward to the millennium and you finally arrive there.