Can investors consistently time the market? Will you be able to tell when to buy or sell? In this video, Jim Davis from Dimensional Fund Advisors runs more than 780 tests on data from 15 stock markets to see what the evidence says.

Every year brings its share of surprises. But how many of us could have imagined that 2016 would see the Chicago Cubs win the World Series, Bob Dylan receive the Nobel Prize in Literature, Donald Trump elected president, and the Dow Jones Industrial Average close out the year a whisker away from 20,000?