DDR didn’t teach me to work myself into oblivion, propelled by shame and chalky smoothies. DDR taught me to get some water, sit down, talk to a friend, send a text, lean on that rail. For DDR, exercise wasn’t some frantic tailspin toward some punishing end.

We have reduced the notion of health to a set of standards that tend to be binary, arbitrary, or both.

Technologies have politics and games have aesthetics, but neither of these factors are immutable; there might still be time to rewrite the purpose of the iPhone’s accelerometer and motion co-processor.

Startups need to stop working in silos, engaging doctors, health care administrators, communities and other system players.