The king called on the royal weather forecaster and inquired as to the weather forecast for the next few hours. The royal weatherman assured him that there was no chance of rain for at least 4 days.
So the king went fishing with his wife, the queen. On the way he met a farmer on his donkey. Upon seeing the king the farmer said, "Your Majesty, you should return to the palace! In just a short time I expect a huge amount of rain to fall in this area."
The king was polite and considerate, he replied: "Thanks for your concern, but don't worry. It's not going to rain today. I hold the palace meteorologist in high regard. He is an extensively educated and experienced professional. And besides, I pay him very high wages. He gave me a very different forecast. I trust him."
So the king continued on his way. However, a short time later a torrential rain fell from the sky. The King and Queen were totally soaked and their entourage chuckled upon seeing them in such a shameful condition.
Furious, the king returned to the palace and gave the order to fire the professional. Then he summoned the farmer and offered him the prestigious and high paying role of royal forecaster.
The farmer said, "Your Majesty, I do not know anything about forecasting. I obtained the information about rain today from my donkey. If I see my donkey's ears drooping, it means with certainty that it will rain very soon." So the king hired the donkey instead.
And thus began the practice of hiring dumb asses to work in the government and occupy its highest and most influential positions.
