2017: the sequel … seven lessons for Hollywood after summer’s disasters

Traditional box-office wisdom has been overturned – but new audiences are starting to emergeA string of critical and commercial duds failed to light up the US box office as Hollywood endured its worst summer in 25 years. But it was a good year overall for the global film market, with the box-office total set to edge ahead of 2016 with sales of more than $39bn (£29bn). Here are some lessons that the film business will have learned from some of the year’s most prominent releases.