I don't abide by the philosophy that pros can get away with it while amateurs cannot. That doesn't make sense since the industry doesn't create that divide. Amateurs compete with pros all the time on the marketplace. Why would you want your script to look amateur?
I make my living judging material from both pros and amateurs, and it behooves an amateur to do whatever a pro does. Doesn't that make sense?
This issue and rationale is tantamount to an English teacher telling a student not to begin a sentence with the word "But." One grows up thinking it's the wrong thing to do.
It isn't.
The rationale behind that philosophy is that when most people start a sentence with the word "But," they end up with an incomplete sentence. However, if you're skilled enough to know the difference between a complete & incomplete sentence, then starting a sentence with "But" is acceptable.
Ditto with any of the "rules" in screenwriting.
The fear is that an amateur will abuse or misuse a technique. Many screenwriting books and teachers tell writers to avoid flashbacks. Writers begin to think that flashbacks are a poor device to tell a story. Arthur Miller made very good use of them in DEATH OF A SALESMAN. The problem is that most writers aren't Miller. And their flashbacks are sloppy, expository, redundant and pace killers.
These rules have been birthed and professed by self-proclaimed gurus who don't work in the business and know little about the inner workings of script selection. I have an MFA from NYU in dramatic writing and learned all these "rules." When I moved to Hollywood following graduation, I discovered that none applied.
All is fair when finding ways to communicate the drama and emotion of your screenplay to the reader. Just use them in moderation.
For instance, one of the big rules we always hear is "Never write anything in a script that cannot be filmed. Do not include characters' thoughts."
Makes perfectly good sense.
STEINBECK'S POINT OF VIEW is a spec script that earned (potentially) the highest payday for (solely) screenwriting in history. And it breaks the "characters' thoughts" rule on almost every page.
Good writers can get away with anything - pros or amateurs - because they make it work.
If it works, it's successful. If it fails, it isn't.
To paraphrase an old chestnut:
There are no rules in screenwriting. Break them at your own peril.
