A young woman felt pain in her teeth and went to a dentist. After checking her teeth, the dentist told her that there is a tooth that has decayed and has beyond decayed and need to be extracted.

The young woman then ask how much will the extraction be. The dentist replied the extraction will cost her $100. The young woman felt it is too expensive and said, $100 for just this few minutes of work? The dentist replies, “Well, I can extract it very slowly over the time frame you like if you want.”