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‘We made ourselves an extremely poor experiment when we started to observe meteorology at the coldest time in the last ten thousand years.’ – Indeed.
Jørgen Peder Steffensen, of Denmark’s Niels Bohr Institute, is one of the most experienced experts in ice core analysis, in both Greenland and Antarctica. In this video he explains a coincidence that has misled those alarmed about the warming recovery since the Little Ice Age. And if you skip to 2:25, you will see the huge error we have made and the assumptions and extrapolations based on that error. Transcript below is from closed captions with my bolds and added images. H/T Raymond
What do ice cores tell us about the history of climate change and the present trend?
This ice is from the Viking age around the year one thousand, also called the medieval warm period. We believe that in Greenland the Medieval Warm Period was about one and a half degrees warmer on average than today
NorthGRIP the Greenland ice core project is being reopened to drill…
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Tallbloke's Talkshop 
[…] 1875 was coldest in 10,000 years, Warming A Good Thing […]
Ice core analyst believes Greenland was about 1.5°C warmer than today during the Medieval Warm Period (see video in the full post for context).
why do you think they usually say, “since the beginning of the Industrial Age,”? If you check the temperatures back a thousand years you find we had just started to come out of the LIA at that time. Gee, hmm, LIA cold, come out of the LIA warmer. I wish I was smart like the warmists then maybe I could understand what that means. [/sarc for those who couldn’t tell]
How was the idea that warming could only be bad sold?
[reply] sob stories e.g. starving polar bears, islands under water, coral reefs etc.
Solar cycle 11 was the eleventh solar cycle since 1755, when extensive recording of solar sunspot activity began.[1][2] The solar cycle lasted 11.8 years, beginning in March 1867 and ending in December 1878.
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During the minimum transit from solar cycle 11 to 12, there were a total of 1028 days with no sunspots (the highest recorded of any cycle transit to date).
https://en.wikipedia.org/wiki/Solar_cycle_11
Historically, many major empires have collapsed when the warm periods during which they’d thrived came to an end. I wonder if the British Empire was the first not to suffer that fate, because it was based on the utillisation of fossil fuel and not purely an agrarian economy?