Earth didn't exist just for 12,000 years. You are providing ONLY 12,000 years of data (cherry picking) to make sweeping statements about our role in Earth's climate which has 4.5 billion history and could have experienced as big if not bigger rates of temperature change that we have today.Kim O'Hara wrote:More generally, geological ages are a very poor guide to time scales which affect human society, as I've said to you before.
A recent climate study has charted global temperature change over the last 12 000 years - i.e. the whole span of human civilisation. It looks like this:
See that red bit at the end? It doesn't look natural, does it? It isn't. We did it.
On your chart, please notice a sharp increase in anomaly around the left part of the graph at approximately 10,000-7,000 years ago. What cause that spike? What brand of cars did those humans drive?