Meanwhile, back in La-La Land, Cameron wants to build more homes, many more homes. He has not said anything about hospitals, schools, roads or what kind of work all these people will do. But here is the interesting bit from Prof Dustmann:
"When populations are decreasing, you're dealing with a shrinking working-age population, which basically has to be confronted with an increasing ageing population which is not productive any more."
"An increase in population means a larger economic base - part of the GDP growth we have seen is due to immigration,".
So, we shovel in more immigrants of working age to pay taxes and pay our pensions and keep the economy growing until, wait for it, they reach pension age. We then get the shovels out again.
Sorry Prof, but your economic model is bonkers and unsustainable.