a great speech by Chris Anderson on how the ubiquity of sensors are going to change our lives.
The Hawthorne effect:

• People change their behevior, often for the better, when they are being observed.
• Now we can observe ourselves.

The New Cybernetics:

• Observations change behavior
• Sensor make them automatic, real time
• Connecting people and data increases statistical power, add competitive/game dynamics

Chris Anderson speaks at TEDx Silicon Valley 2011 from TEDx Silicon Valley on Vimeo.