They also look very similar to the simulations coming out of Piomas (Pan-Arctic Ice-Ocean Modelling and AssimilationSystem), an influential computer model that has been used to estimate Arctic sea-ice volume and which has been the basis for several predictions about when summer sea ice might disappear completely.
The right policy is a growing economy, non-burdensome immigration laws, a welfare system which promotes work, not dependency, and a culture of assimilation, not isolation.