Those interested in casuistry and determinism, the film suggests that Loki came to Earth, because of the research into higher order weapons, at their own version of White Sands.

http://www.forbes.com/sites/johngaudiosi/2012/05/08/disney-confirms-the-avengers-2-movie-theme-park-rides-games/

It's a tool like everything else, and it's Samuel Jackson, I didn't recall if siri was product placed in the 'Avengers' as for Zoey,
well that takes little deep thought, the profanity, in the previous post, is characteristic of one of Jackson's signature tropes

Come on it's Zooey Deschanel, and 'Nick Fury', sometimes deconstruction isn't required, I wondered how they would pull off the Helio Carrier.