Ugh, I'm one of those people who will defend imperial as not being irrational, just built ad-hoc for purposes that aren't in alignment with modern ones and ... No, that's not what Fahrenheit is.

Fahrenheit was trying to make a temperature scale that was easy to recreate to ease the calibration of thermometers. Zero is a temperature that can be created in your garage with some ice, salt and water. 100 was his best, ultimately inaccurate, attempt to measure human body temperature, since it's another easy calibration point, and from there water was defined as 32 and 212 so that they were 180 degrees apart, which would fit will on a temperature dial.
Not irrational, not a comfort scale, and not in alignment with current needs.

It's pure coincidence that it kinda lines up with comfortable outdoor temperatures in the opinion of a good chunk of a population living in the northern part of the western hemisphere.

Americans using the word propaganda for "something I don't understand because my school system failed me so now I overcompensate by making up factoids that make me look even more uneducated by the rest of the world"

Every day I learn that people are even dumber than I previously thought.

100% hot by what understanding? If I set my oven to 100F, the peak of heat by this memes reckoning, that roast chicken is going to kill my family.

If I run a warm bath at 50F, the medium-est of heats, My testicles are going to implode faster than a billionaire in a homemade submarine when they touch the water.

If we are talking human comfort, then 50F is also way too cold to be considered “50% hot”.

You guys are too ignorant to see how full of shit OP is.

50F is not 50% hot, it's cold. If your house was 50F you'd be saying "something is wrong with my HVAC". You'd never heat to only 50, and you'd never cool that far. It's cellar temperature (colder than a wine cellar, warmer than a root cellar).

70F is 50% hot. It's a temp you'd cool to in the summer, and a temp you'd heat to in the winter.

100F isn't 100% hot either, most people enjoy a hottub to be a little hotter.

Tldr: OP is wrong

Celsius is the perfect system to describe how hot or cold it is, assuming you're a water molecule.

How is freezing cold, 32% hot? What am I missing here?

i tell them i use a 100 hour clock. Day starts at 0 at ends at 100. They see how much better it is and they have an existential crisis. And then everyone clapped

I'm 98.6° Greg. Am I hot?

Celsius is percentage boiling.

I use a binary thermometer. 1 is hot, 0 is cold.

ITT: Water requires over double of all the hot just to boil.

Just in case because this is the internet at the end of the day. Fahrenheit is not linked to a percentage of anything. It's mostly arbitrary in terms of assigning a number scale to temperature and it's linked to brine solutions and human body temperature.

The only temperature system that isn't arbitrary would tell you how spreadable butter is. Zero degrees butter is utterly not spreadable while 100 degrees butter is the maximum spreadability it could achieve before melting.

Get your ass outside at 0ºC and I guarantee you it's 0% hot.

I'm in Finland. I sometimes say stuff like "oh it's -30°C today. It's getting just a little bit nippy."

A friend of mine in California is like "Jesus Christ what are you talking about" and yes, he can convert that

Ummmm? Well technically you can describe celsius as 0 being 0% boiling and 100 being 100% boiling with water. And it actually works pretty well because the hotter it is, the more it evaporates. Tho pretty sure its not linear and also thats a stupid way of saying it anyways.

We need to collectively realize that both Celsius and Fahrenheit are mostly arbitrary and not more than practical conventions to assign numbers to temperatures. Kelvin makes more sense but is impractical for daily use. It's just US-Americans distracting from the fact that most of their units are objectively bad compared to Metric by pointing out that Celsius is only marginally better.

Hot take: the best temperature scale would have 0º be water freeze point and 100º be human body temp. Fahrenheit is already supposed to be that but nobody gives a shit about a saline solution freeze point and they fucked up the human body temp.

In that case, you should change the scale to match how hot/cold it actually gets outside. In many parts of the world, and even in North America, it regularly goes below 0F or above 100F.

"How hot it feels" is highly subjective. I would absolutely melt at 100F but feel fine at 0F, and nothing feels colder than those rainy windy days when it's 5C outside.