I am not sure about this comfort thing you talk about. Where does this come from? Just wondering where does those numbers come from. In any case I wouldn’t consider minus 0C on my comfort zone but that’s another topic…
Honestly?
100°F (37.8°C) is universally uncomfortably hot 0°F (-17.8°C) is universally uncomfortably cold. 50°F is exactly what you’d expect it to be, 10°C, and room temp is ~70°F (21.1°C). Honestly it makes a lot of sense compared to humans (and most mammals).
People exist in both extremes but there’s virtually nobody that could survive constantly in either temperature without taking measures and I’m willing to assert that as fact. Both are extreme but common. Thus I’m willing to call them a good general measure.
It absolutely doesn’t make any sense! 38°C is a heat wave where I live and it’s a hot place, and - 10 is never reached in most places in my country. Besides, you can get a thermometer between - 30 and +50 and you’ll have all temperatures you need. 0 is freezing cold, 21 is comfort room, and 25 is when the chocolate starts to melt in your fingers.
Well, 0°F comes from the temperature of any mixture of ice, water, and ammonium hydroxide. 100, idk, but I’m guessing Fahrenheit had an upper bound.
Either way, he made a scale that said, for people, “really cold” to “really hot” and it is pretty instinctual to me.