What do you think of the BEST fit of temperature to CO2 and volcanoes?

This question replaces one deleted by an anti-science troll.
Update: There is some confusion about the graph. The black curve is the BEST land surface temperature, while the red line is a regression of that against a linear combination of the logarithm of CO2 concentration and volcanic sulfate emissions. Adding a proxy for solar activity did not improve the fit.
Update 2: The y-axis is temperature, the x-axis is time. Could someone please help the geologist understand this?
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