These fucking idiotic claims of record global temperatures not seen in >100k years fucking irritate me. Well, pretty much everything fucking irritates me, but that's beside the point. A few points: - The "temperature" is only available using computer modelling, it is NOT a physical reading and relies on huge assumptions about the temperature of large parts of the world. - The historical instrumental temperature record is sparse, and gaps (like almost the entire Southern Hemisphere) are filled in with what amounts to guesses. These "exrapolated" temperature records often have significant deviations from what you would expect, particularly in the Southern Hemisphere below 60deg. South. - Temperature records before contemporary measurement necessarily rely on proxies. Proxies are notoriously inaccurate, but a bigger issue with them, particularly when using them to compare to effectively instantaneous temperature measurements of today is that they are low resolution. A proxy record may have a resolution of a few months if you are lucky, so any comparison to such a proxy should only use a current temperature record averaged over the same time period. This practically eliminates the spikes (up and down) in temperature that are recorded in a contemporary measurement. Generally, the older the proxy, the lower the resolution. By the time you get back to >100k years, the proxy resolution is in years if not decades. Proxy data is incomparable (directly) to measured data. They are both temperatures, but are measured at such different resolution as to be impossible to compare (honestly) to each other. Anyone who is an actual scientist should know that you cannot compare proxy and instrument data, especially grafting them into the same dataset and pretending it is a continuous signal (cough cough Michael Mann, you fucking fraud!). The people doing this are either incompetent or dishonest.