It was an enormous mistake to appoint Mark Carney as the Governor of the Bank of England. In a job that is supposed to be a-political, because the Bank of England is supposed to be independent, Carney has demonstrated a willingness to make political statements, endeavour to influence policy and now in what should be his last major speech, he's announced an astonishingly reformist policy shift in the weeks before his term comes to an end. All the fuss in the media this morning is about Facebook's Libra. However, there is something that has the potential to cause far more systemic problems than that.