I work in a cinema, and today we received our copy of Christopher Nolan's Interstellar: which came packaged and labelled as "Flora's Letter"
As is quite well known, film's are distributed (and sometimes produced) under working titles or false titles, in order to interfere with potential pirates or thieves.
What is less well known, is that most film producers cannot resist the opportunity to leave clever clues and hints; almost like serial killers!
Even previous Nolan films have a precedent for this, being distributed as Backbreaker (The Dark Knight Rises) and Be Kind, Rewind (Memento)...
Which leads me to ask... What is the significance of 'Flora's Letter'?