Filch's reminder, scheduling

[foxmoth at qnet.com]

   I don't have a problem with this line, because the 3rd floor 
corridor in which Our Three find themselves has obviously been 
unused for  some time. One can assume it's been out of bounds 
for  a while...maybe, in the world of the movie, there was 
something else up there before Fluffy... a particularly malevolent 
ghost, perhaps?
    As a sometime film student I second everything Ali had 
to say about the crazy production schedule. 
         Making a film is more like architecture than novel-writing. 
The cast and the crew  have schedules of their own, in which  
your project is allowed a specific amount of time. You have to be 
ready when they are, otherwise things get wildly expensive and  
may become impossible, as your stars, studio space etc may no 
longer be available.  With a film like this, every detail has to be 
worked out before shooting starts, otherwise it's like trying to lay 
track in front of an oncoming train. 

 Once out of the planning stage, it's generally too late to make 
changes even if you *know* it's not going to work. It's like trying to 
dock the Queen Mary...by the time you can see you're going to hit 
the pier,  it's too late to do anything about it.
  
Pippin