And it brings to mind a highly controversial piece of economic work by Professors Andrew Hughes-Hallett and DrewScott, published last year, which argued that the act of devolving tax power in itself can drive up growth rates, at least temporarily.
The exchanges came just two days after Labour called for an investigation into the way the government used quotes from work by academics professors Andrew Hughes Hallet and DrewScott, claiming phrases had been changed to make the case for increased devolution.