"One night, a group of moths gathered on a shelf watching a burning candle. Puzzled by the nature of the light, they sent one of their members to go and check on it. The scouting moth circled the candle several times and came back with a description: The light was bright. Then a second moth went to examine it. He, too, came back with an observation: The light was hot. Finally a third moth volunteered to go. When he approached the candle he didn't stop like his friends had done, but flew straight into the flame. He was consumed there and then, and only he understood the nature of the light."