@McRat you posted a link to File:Greenhouse gas emissions (including international aviation, indirect CO2 and excluding LULUCF) trend, EU-28, 1990 - 2015 (Index 1990=100)-Fig1.png - Statistics Explained earlier and then made a comment on how the NOAA numbers are 3x higher.
You apparently don't realize the chart you linked to is in % compared to 100% at the start of the period and the NOAA numbers are in ppm. There is no 3x to compare as one is relative and the other is absolute. You don't have enough information without knowing what the 100% ppm was on the chart you linked to know if it is more or less.
I will be the first to admit I'm pretty stupid. The amount of things I don't know grows geometrically as I age.
But what I'm referring to about the 3x factor was how much the leading scientists in the world got their math wrong about the hydrogen bomb they detonated on Bikini Atoll.
These scientists were paid for a certain outcome. And while the outcome basically did occur (their paychecks didn't bounce), the outcome was not what they thought it would be.
The other references to math mistakes causing billions of dollars of damages didn't cost human lives like Teller's mistake did.