I agree with your assessment of MOSTLY WRONG but I think that you are overly pessimistic about the timelines: > But medically speaking, smartwatches are probab

I agree with your assessment of MOSTLY WRONG but I think that you are overly pessimistic about the timelines: > But medically speaking, smartwatches are probably decades away from independently diagnosing anything, let along recommending an intervention Continuous PPG in its current form can diagnose acute and chronic changes in our health condition but the vendors are reluctant to do so. As examples, the newer PPG devices with SpO2 can detect acute and chronic changes in oxygen saturation (critical with COVID-19), Heart Rate Variability (HRV) can indicate infection associated stress, HRV should be used as a proxy for breathing rate, and the Machine Learning derived sleep cycles can indicate sleep disorders. The data is useful now but the off-device analysis necessary seems to missing in action.