The spending hockey-stick was unveiled as new evidence that unprecedented global warming has caused accelerating spending, unequivocal debt and severe economic climate change (ie, high unemployment and slow growth).
Relying on the consensus precautionary principle, Mann has advised President Obama to spend much greater amounts in all areas to mitigate and adapt as quickly as possible to the economic hell that's in the pipeline from the massive CO2-induced global warming that took place over the last decade. (image source here)
/sarc