Eli5 Why 80 degree Celsius is not four times as hot as 20 degrees celsius?

Question

Eli5 Why 80 degree Celsius is not four times as hot as 20 degrees celsius?

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Answer 1

I’m not a maths person. The difference between 20 and 80 is 60, so, isn’t it fair to say it’s 3 times hotter, not 4?