<human>: The thought process on this stems back to the use of stethoscopes to help identify physiological problems. A doctor can tell that there is something irregular with my stomach or heart by placing it to my chest or abdomen.

Further, some mechanics can diagnose problems within a car's engine by simply listening to the noises coming from it... My mom swears she can tell where ants are at in the wall placing her ear to it. Any exterminators out there that can confirm this?

This might be movie magic, but what about thieves / locksmiths that stick a stethoscope up to a vault door while cracking a combination? Is that shit real? What other problems can we diagnose / figure out / solve by sound alone?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Using sound alone we can diagnose certain physiological ailments. What are some other ways we use sound to solve real world problems?