Beware the Lofty Promises of Covid-19 ‘Tracker’ Apps
A popular symptom-tracking app made a splash for its surprising discoveries. But a deeper look at the data calls those findings into question.
A popular symptom-tracking app made a splash for its surprising discoveries. But a deeper look at the data calls those findings into question.
Targeting strategies may be effective for marketing, but in the early stages of an epidemic, they lead to harmful tradeoffs and biased data.