written for nz.general, but not posted in full

The difficulty in filming a book is that many people know the story and spot any differences.
And how do you condense a book that may take a week to read, on and off, into a couple of hours of film?
Jurassic Park made a great film technically, but didn't have the long build up of suspense that the book has.

Shakespeare, divided into Acts and Scenes, seems to have built in breaks for the TV ads. In the theatre of his day they probably had orange sellers etc wandering about in the breaks.

But to break a Greek tragedy with commercials would be fatal to the story.
I saw Sir Laurence Olivier in Oedipus years ago. If that was filmed it should be done as it was in the live theatre.
How would a modern film handle the action related by a messenger? Would they try to film what happened instead?
And how would they use the Chorus?

There was some criticism of Henry V being filmed years ago. Some people thought showing the actual battle scenes wasn't right.
And of course with Shakespeare any cuts or alterations in the language are immediately picked up by many people in the audience.