Stethoscopes did not improving listening. It has been easier to hear by placing your ear directly on the body. Stethoscopes were only invented because of modes

Stethoscopes did not improving listening. It has been easier to hear by placing your ear directly on the body. Stethoscopes were only invented because of modesty. (Edit: and because of convenience for the doctor). Of course new listening devices using microphones can improve on the human ear. But a rubber tube cannot.