Anthony Rayner: Can politicians deliver on campaign trail promises?

Billions of data-sets exist globally but, from a top-down perspective, there are only a small number of factors that markets really care about at any one point in time. These are the issues that bubble up to dominate the market narrative - for example, the Greek crisis, excess Chinese credit or the Middle East conflict. Sometimes resolutions are found and the problem goes away but, more often, the market simply moves on to a more pressing concern or opportunity. Normally, these issues fall within a small number of categories, including economic, financial, political, social and system...