Fahrenheit is a scale that we use for weather, this isn't even for anything else. Humans are very sensitive to temperature change. And there is a real difference between 68 and 72. That's the reason i think fahrenheit so stubbornly stays. If you keep fahrenheit for degrees, then i guess you got to keep fah Fahrenheit for all temperature measurement instead of just weather. You also now measure like water boiling and all. I don't need to know how to. I bought you for reason. Please just say yes."