Want to see how well Siri works when it’s backed up by a full team of video production editors? Apple has produced an amusing “film” with Dwayne “The Rock” Johnson in which he manages to use Siri repeatedly while doing everyday made-up movie star stuff. We believe all the actual Siri commands he issues could work, although many would require that the iPhone be unlocked. And when we tried to duplicate his commands, Siri failed to understand our words much of the time. Happily, when Siri misheard “read my last email” as “delete my email,” we learned that Siri isn’t allowed to delete emails. Which is a good thing.