Narrow Margin is a clumsy version of the Idiot Plot, dressed up as a high-gloss chase thriller. The Idiot Plot, of course, is any plot that would be resolved in five minutes if everyone in the story were not an idiot. And rarely has there been a film in which more idiots make more mistakes than in this one."
Originated by SF author James Blish
and popularized by film critic Roger Ebert
during his review of the remake of Narrow Margin
, this trope is a term for a Plot
that hangs together only because the main characters behave like idiots. A single intelligent move or question by any of the characters, and all problems would be resolved
. It's not so bad if the characters are supposed
to be acting like idiots
, but it's very
bad if the Idiot Plot depends on a character suddenly acting stupid enough
for the Plot to work.
Even worse than that is "second-order idiot plot", in which the plot can only function if the world population suddenly loses about 50 IQ points.
In fact, author Damon Knight originally coined the term
"second-order idiot plot" to refer to a science fiction story that features a fictional society that can only
exist if everyone living there is an idiot.
Idiot plots can often be avoided with a simple wave of the hand
. If the audience would have spent the entire story wondering why the hero didn't try some obvious tactic, a hand wave at the beginning of the story as to why that wouldn't work would prevent an idiot plot, regardless of how contrived the excuse was. However, if the hand wave is bad, it may actually create a new obvious solution just as bad as the original.
It is important to note that this not always a bad thing
, and is sometimes the entire point
of the work. Part of what can make a drama dramatic is that the characters could truly have avoided it if they had acted rationally instead of irrationally. This is often what makes
a comedy so funny in the first place, as well.