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Optimising for “performance” is directional #cop26

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In the week where the worlds “leaders” meet to discuss and agree on the future of our climate at  #COP26 , I remain sceptical about agreements.  At #COP22 there was an agreement to halve deforestation by 2020 ; we missed it, so we have moved the target out.   Here is a review of all the past COP meetings and outcomes. It is hard to find any resources to compare previous agreements with achievements.  Below is from the UN.  The reason I remain doubtful and sceptical is that the decision of 1.5 degrees is framed.  We are optimising for a goal.  In this case, we do not want to increase our global temperature beyond 1.5 degrees.  Have you ever tried to heat water and stop the heating process such that a temperature target was reached. Critically you only have one go.    Try it. Fill a pan with ice and set a target, say 38.4 degrees, use a thermometer and switch off the pan when you think the final temperature will be your target. Did you m...