Is the stethoscope a vestigial organ?

In the context of human evolution, a vestigial organ is defined as one that has lost all or most of its original function through evolution. Charles Darwin provided a list of vestigial human organs in “The Descent of Man,” including the muscles of the ear, wisdom teeth, the appendix, the coccyx, body hair and the semilunar fold in the corner of the eye. If you had told me 19 years ago when I graduated from medical school that I would one day compare my stethoscope to a vestigial organ, I...

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