A waterbearer in India had two large pots, one hung on each end of a pole, which she carried across her neck.
One of the pots had a crack in it. While the other pot was perfect, and always delivered a full portion of water at the end of the long walk from the stream to the mistress's house, the cracked pot arrived only half full.
For a full two years this went on daily, with the bearer delivering only one and a half pots full of water to her master's house.
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