Group A pushes the high end of statistical boundaries to get a scary sounding story. Group B starts with group A’s results and then again pushes the high end of statistical boundaries with their conclusions. Group C does the same, and so on and so forth.
Once you compound a 20% error five times, you have a 250% error. That is where all these idiotic claims of 10 degree temperature rise, multi-metre sea level rise, etc. come from.
There is a fundamental institutional incompetence in the alarmist community which needs to be eliminated.