These are standard talking points that people parrot and both of them are misleading. There did exist a global cooling idea and it was in some pop sci magazine

These are standard talking points that people parrot and both of them are misleading. There did exist a global cooling idea and it was in some pop sci magazines, but it was never a serious prediction by the climate change community. Even in back in the 1970s we had a pretty good idea how much warming would result from adding co2 into the atmosphere: https://theconversation.com/40-years-ago-scientists-predicted-climate-change-and-hey-they-were-right-120502 https://theconversation.com/40-years-ago-scientists-predicte... To your second point, predicting the total heat of the Earth is also easier than predicting what the weather will be at one spot on the globe in any given moment. The former has only a few inputs (the sun) and outputs (back to space!) But how that heat swirls around in the atmosphere and moves to and from the oceans is pretty complicated.