Plant Manager: We could greatly reduce the amount of sulfur dioxide our copper-smelting plant releases into the atmosphere by using a new process  The new process requires replacing our open furnaces with closed ones and moving the copper from one furnace to the next in solid, not molten, form  However, not only is the new equipment expensive to buy and install, but the new process also costs more to run than the current process, because the copper must be reheated after it has cooled  So overall, adopting the new process will cost much but bring the company no profit
Supervisor: I agree with your overall conclusion, but disagree about one point you make, since the latest closed furnaces are extremely fuel-efficient
whether the new copper-smelting process is more expensive to run than the current process