The Crow and the Pitcher

A crow dying of thirst saw a pitcher, a container for holding and pouring liquids. Hoping to find water, he flew eagerly towards it. When he arrived, however, he was disappointed to discover that there was too little water inside for him to reach. He tried everything he could think of, but none of his efforts succeeded.

Finally, he collected as many stones as he could carry and dropped them into the pitcher one by one with his beak. As the water rose, it came within his reach, allowing him to drink and save his life.

Necessity is the mother of invention.