Tools of the Trade

All professions have the "tools of their trade". Plumbers have a wrench. Electricians have wires. Carpenters have hammers. Doctors have their stethoscopes. The stethoscope is a tool that is used for 5 seconds but brings in a lot of money. It is usually worn like a necklace to show a doctor's stature. I once put one around my neck and it was really uncomfortable. If you are in a hospital and a doctor pops his head in to say hello, as long as he listens to your heart, he will charge your insurance. Stethoscope = revenue.