Its not just physics, really.Let me try a last time: It is not math, it is physics.
The only real measure of temperature is the absolute temperature, or the temperature in degrees Kelvin.
You can get any percentage increase you want by selecting an arbitrary null for your temperature and your calculation.
If you select -17C as zero, you get one number, if you select 0C you get another number, if you select 16C you get another number.
The only number meaningful in a physics sense as a basis for the calculations is degrees Kelvin.
There is an argument that you could pin change from either above absolute zero or from the planet's temperature from the last 10,000 or so years.
I don't think climatologists ever use the Kevlin measurement in discussions, they usually use the temperature above zero, which is why I used it.
So maybe its two views from different scientific approaches, physics and climatology.
Either way, saying {1-5}/288 or {1-5}/16 = 400% is just bad math.
Really, moviefan should have done (5.4-1.1)/288 or /16 if he wanted a single number as percentage range, which would have given him a range of 01.5% or 26.8% as range based off the pre-industrial temperature of the planet
Instead he just looked at the difference between the two approximated warming temperatures, as in 5 is 4 more than 1 therefore its a 400% increase.
Shoddy thinking.
What is entertaining is that moviefan made a basic error and refuses to acknowledge that error. Instead he's just doubling down on it and lobbing insults.