No, it's a completely pointless graph because the earth's temperatures will never fluctuate again like that again, certainly not while humans are still alive on the planet.
You also failed to comprehend how the earth evolved over that period to where it is today, a much more stable planet.
You also failed to notice the massive uptick at the end of the graph in a very short period of time on trajectory towards the level where the icecaps melt. If that happens Australia is f'd.
