When it’s above 100, people who have options for something lower will generally go for them. Similarly for under 0. OK, so as PancakeLegend@mander.xyz pointed out, such sensitivities might be specific to US culture, but theoretically, how much would we have to expand the 0-100 Fahrenheit range so that 0 is too cold for pretty much everyone and 100 is too hot for pretty much everyone? 0 goes to -10, 100 to 140? A new-Fahrenheit degree would still be more precise than a Celsius degree.