A physicist, a chemist, and a market researcher enter the lab.  Shortly after entering, they are alarmed to see smoke and fire coming from a wastebasket. The physicist says, “I know what to do! We must cool down the materials until their temperature is lower than the ignition temperature and then the fire will go out.” The chemist says, “No! No! I know what to do! We must cut off the supply of oxygen so the …