How do we measure changes in behavior in a meaningful way that's going to help us with prevention of disease, early onset of disease, and tracking the progression of disease over a long period of time?
当它能帮助我们预防疾病， 早期疾病的爆发，记录疾病的长期进展， 我们怎样量化这样的行为 所带来的重大意义上的改变呢？