You are welcome to ask any questions you like, at the risk of continually dragging the discussion back to remedial things that have been addressed, at length an

You are welcome to ask any questions you like, at the risk of continually dragging the discussion back to remedial things that have been addressed, at length and in detail, to very high confidence, by hundreds of papers. It's hard to distinguish sometimes between honest questions out of curiosity and active disruption campaigns by highly motivated trolls. I'm not calling you a troll here, but I've seen so many discussions about this topic that TBH the kinds of questions you ask and the manner in which you persist set off alarm bells, especially bringing up the red herring about economic impacts, which belies a different set of priorities besides an interest in the details of our impact on climate. As such I am less inclined to engage with you and instead would point you to reading detailed materials that address your questions (spoiler alert: this 5% you continue to hammer on is not the cumulative number, but nevertheless, yes, absolutely, the climate is very sensitive to CO2 levels and we have already experienced warming due to it, and have already locked in future warming because of where we have pushed CO2 levels). The IPCC reports on climate change are a good place to start. They aren't perfect, but they are the sum of many thousands upon thousands of professional researchers who study exactly the questions that you raise. If you're instead interested in dismissing many people's work with some silly gotchas using "common sense", then I'm just going to wander off now.