Disclaimer: "The Big Bang Theory" belongs to Warner Brothers.
"Amy, would you trust a groundhog to drive a car?" asks Sheldon Cooper.
"No," answered Amy Farrah Fowler.
"Would you trust a groundhog to operate on you or anyone else?"
"No."
"Would you trust a groundhog to fly an airplane?"
"No."
"Would you vote for a groundhog in an election?"
"No."
Sheldon turned to the camera and asked, "Then why do millions of people trust a groundhog to predict the weather for an entire nation over a six-week time window? This groundhog has no understanding of English or mathematics. It does not have the equipment to see radar or satellite imagery. It does not even demonstrate any loyalty towards humans. Yet every February second, everyone treats a groundhog in Pennsylvania with more respect than all the human meteorologists on Earth combined. It's an occasion known as Groundhog Day. Well, I have news for you. Groundhog Day is malarkey!"
Now it was Amy's turn. "There are two main variables involved in Groundhog Day. The first is the angle of the sun. The second is the angle in which the groundhog is looking when it leaves the hole. Neither variable has any relationship whatsoever to what the weather in the United States will be 42 days into the future. According to , Groundhog Day predictions are only 39% accurate. The sad truth is, the farther out you try to forecast the weather, the less accurate your prediction will be. Most meteorologists state it impossible to accurately predict the weather more than 10 days in advance. Even meteorologists can get it wrong. Meteorologists predicted that it would rain in London on April 29, 2011, when Prince William married Kate Middleton. That prediction turned out to be false. But that incorrect prediction only covered the time span of a single day. Mistakes made by the groundhog on Groundhog Day cover a timespan 42 times longer. Meteorologists 1, Groundhogs 0."