It'd be thousands of years doing exactly what it's doing now
Actually science does not support this claim?
We can drill into stuff with...you know...like...drills. Then we pull out core samples of all kinds of things from all over the planet.
Then we compare and contrast these things using the scientific method. We then extrapolate data from what we have found.
An ice core sample fom say, the permafrost in northern Finland, and a soil sample from Venezuela, and tree ring samples from Brazil, and a .....and the list goes on and on.....
all confirm the fact that warming and cooling are in fact natural cycles of earth's long term climate.
That is what makes these tools so valuable.
Once it has been scientifically established what is "normal" for planet earth it is fairly easy to identify abnormalities.
Man -made global warming and abnormal, accelerated climate change does not fit the pattern(s), or cycles going back 200,000 years.
We've done this to ourselves just in the last 175 years.
Listen Pal. I'm not ignorant like you so run along.
Save the sanctimonious "Mammy" shit for lesser folks ok.
You are not qualified to dismiss me.
Stick around for further lessons if you'd like.