I’ve told this story before but it requires repeating because of awareness of climate science corruption. Even skeptics realize claims of incompetence are inadequate.
Official Intergovernmental Panel on Climate Change (IPCC) climate science was completely orchestrated for a premeditated result. T.R.Wigley’s 1983 paper “The pre-industrial carbon dioxide level” was pivotal in the evolution of climate science corruption. It was a flawed paper that cherry-picked data to claim pre-industrial CO2 level was 270 ppm. G.S. Callendar did the same thing (diagram), as Zbigniew Jaworowski illustrated in a paper to a 2004 US Senate Committee.
There are 90,000 samples from which Callendar selected a few. Notice they also change the slope of the trend, to show a steady rise from 1750.