xkcd #3202: Groundhog Day Meaning
Title text:
Originally, the ceremony used a variety of rodents and mustelids, but over time most people agreed it made sense to standardize on a specific individual ground squirrel in Pennsylvania.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3202/
You gotta have some standards. If you use a different rodent every year, you can’t realistically compare the results with one another. Who knows how wildly the measurement error varies from species to species?
Americans will use any unit besides the metric system /s
Groundhog (Gr), a unit of uncertainty in weather predictions. The value of 1 Gr means the prediction is as good as pulling it out of a hat.