This brings us to an issue in the UK that has sparked debate for many years, and which has echoes of the American dream. The argument is that, while the levels of inequality are important, it is just as important (and, some would argue, more so) that even if you are born to parents a long way down the earnings distribution, during your lifetime you have a high chance of climbing to the top if you are smart. This is not just an issue of equity, but one of efficiency too.