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---which is why my thinking always ends up w/ the conclusion that if we don't know what temperatures things are, then we can't say which is hotter or cooler than the other.
Everyone has their own point of view here but there's got to be a few things we can all agree on.There are some unbiased signs that it has warmed, ( the plant hardiness zones) but that is very gradual.
How about we agree that the only way to see if something's cold or hot is by measuring its temperature with a thermometer? --and a thermometer can be many different things (mercury in a tube, a compound bar, your hand, isotope content of pack ice, etc.). All thermometers have some time lag from the time of the sensing to the later time of reporting. All thermometer measurements report for a specific location and the readings can define a range of probably surrounding temperatures.
There are ways of determining the total average temperature of the entire biosphere and the measurements also tell us the level of accuracy range of the reading.
We should be in agreement with this, and anyone who's convinced that the biosphere's 1.5C hotter now than 1850 should have sufficiently accurate temperature readings for then and now.
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