If the 100w bulb is not brighter than the 40w bulb, why would they make
100w bulbs? Just to waste energy? I realize that watts is not a measure
of brightness, but for any given technology, the higher wattage bulb is
brighter.
>
> But most people will, without thinking, say "Oh, a 100W bulb is
> brighter than a 40W, so the answer is obvious." And wrong.