Stethoscope???.....those accuracy are less than 50%, that why...

Stethoscope???.....those accuracy are less than 50%, that why there is a huge revenue health market for this medical diagnosis tool (as others that are 90%+ accurate takes time and are very expensive and place a lot of strain on the ever increasing world population).

And if you think about it, if doctors are trained to hear specific sound to diagnosis specific respiratory diseases than they will have a digital/frequency signature and an algorithm would be better at diagnosing it then human ears, one would think.