Often the questions we ask require us to make accurate predictions on how one factor affects an outcome. If a teacher is asked to work out how time spent writing an essay affects essay grades, it’s ...

Quick take: At the end of June the S&P 500 index price was 62% above its long-term trend, down from 65% above trend the previous month. About the only certainty in the stock market is that, over the ...

Quick take: At the end of February the inflation-adjusted S&P 500 index price was 76% above its long-term trend, down from 78% above trend the previous month. About the only certainty in the stock ...