professor, from the university of stirling, welcome. days, i want to talk about oil because it is an important part of the scottish economy. we have seen oil prices since the independence referendum nearly halving and that has affected revenues for the scottish economy? it does, it has a substantial effect on the revenues on an independent scotland so the taxation and spending would be more difficult. at the moment, it doesn't look like oil price will go up any time soon, for a variety of reasons. it does make the case for independence more difficult. when we look at where scotland figures in the whole uk picture, economic growth is a big problem, because it affects how much people have in their pockets. growth is shrinking, if we get another quarter of economic growth shrinking, we fall into a recession? the scottish economy has grown markedly less slowly down the uk. part of the money the scottish government gets now comes from its own income tax revenues, so that is a worry. clearly, for the last two, three quarters has been falling