[YellowStuDregg]

A quick google search gives us plenty of past published projections and how they fared:

https://www.carbonbrief.org/analysis-how-well-have-climate-m...

You can also watch Carl Sagan break it down in front of congress back in 1985 for just 15 minutes of your time

https://www.youtube.com/watch?v=Wp-WiNXH6hI