Good riddance to old-fashioned light bulbs

Imagine if gas stations installed pumps that spilled four-fifths of everything you bought. You’d fork out $10 but only get $2 worth of gas in the tank. The rest would spill onto the ground, stinking up the joint and polluting the groundwater. Outrageous! We wouldn’t stand for it, right? Actually, we might – because this what happens every time we turn on a traditional light bulb.