13.1 INTRODUCTION
The world’s craving for data and passion for information seem to have no upper boundary. If it is at all possible to somehow capture the digital essence of an activity, it seems we are utterly compelled to do so. It’s as though the single byte that we fail to lock in our archives will be the only one that’s important 10 years hence.
Consider a trip to the grocery store, as an example. If you drive there, your automobile may be recording status information from its internal computer systems, while its global positioning system continually relays your location to a satellite. Once you are inside the store, your picture may be taken several times and recorded in a digital security system. Some of the items you place in your basket ...
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