@battygal696 Takes into account things such as wind. Not just the temperature in the atmosphere. It could be but we make sense of it that way since we as humans believe ‘100’ is bigger. The way we gauge time may be constructed but how we feel it is not constructed. Both arguments work.
@battygal696 Does it matter if you can feel it? Also freezing point is 0 boiling is 100 so I will take an educated guess it’s based off that. And that is fact.