The Over-Quantified Self
As the volume of clinical and health data increases, consumers will struggle to make sense of the flood of information they produce. Some may ignore this data; others might look for ways to simplify it, while the rest will turn to trusted medical intermediaries for assistance.
Trend Longevity Rating
became core infrastructure in health care, often bigger than the book imagined
How this trend held up
Wearables didn't just persist — they multiplied. The Apple Watch, Oura Ring, WHOOP, and continuous glucose monitors marketed to people without diabetes have made self-tracking dramatically more mainstream than the Fitbit-era devices the book describes. And the specific worry it raised — that data without interpretation is just noise — proved durable enough that fixing it became the industry's central design problem for a decade, addressed only recently as AI-generated coaching summaries (on Apple Watch, WHOOP, and Oura) finally started doing what Jody Ranck told the authors in 2013 the industry still couldn't: turning numbers into advice.
Every past trend prediction is re-reviewed and graded with a Trend Longevity Rating, measuring how much each originally curated trend still matters years later.
