Fahrenheit is such a dumb temperature scale. Daniel Gabriel Fahrenheit simply took the lowest outside winter temperature of his hometown as zero and the highest summer termperature as 100 degrees. If he had lived somewhere else or at a different time, the temperature scale would be different.

Although Fahrenheit was German, Germany does not use this scale. It would be nice if the remaining parts of the world that still use the Fahrenheit scale could eventually switch to Celsius which at least makes a little bit of sense.