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Scale 25º 50º 75º 100º
Celsius Cold Warm Dead Dead Dead
Fahrenheit Really Cold Cold Meh Warm Really Hot
Kelvin Dead Dead Dead Dead Dead
Rankine Dead Dead Dead Dead Dead
Réaumur Cold Warm Dead Dead Dead

Also, look. At -40ºC, it’s actually -40ºF. Isn’t that cute? Celsius trying to be reasonable, and all. Sorry, Celsius. Too low, too late. Back across the pond with you.