'Are we expected to believe this?'
'Source Code' shouldn't really work. The film has the hero inhabit another person's reality for
the same ten-minute period, not once, but repeatedly; we are told that the
events we are seeing are the events as remembered by the dying brain of the
victim of a train bomb; moreover, the memories themselves aren't static - our
hero is able to interact with them so that the events play out differently each
time, rather like he's travelling back in time repeatedly. Meanwhile, the hero
we are seeing interact with these remembered events is actually lying comatose
in a box.
Somehow the film-makers convince us to suspend our
disbelief, so that during the watching of the film we accept all sorts of
preposterous ideas simply because of the compelling and efficient way they are
told.
Here are some thoughts on how they make the story
believable.
An explanation that makes dramatic sense (even if the
science is iffy)
If the film-makers presented us with the 'realities' of the
film up front, the film wouldn't work. Of course, the whole point of these
'realities' is that they are the discoveries and twists that generate the
interest of the film. The key thing to learn here is that you can get away with
a fantastical basis to your plot when you take time to establish it, and when
you make it a central part of your plot, rather than a hurried explanation.
By way of contrast, remember how they bring back Sean
Connery's character from the dead in Highlander 2? As I recall, they explain it
with a conversation between Christopher Lambert and Sean in the past, where CL
is told 'if ever you need me, I will find you'. Not exactly watertight
dramatically. The explanation has to be believable for the audience to keep
investing their attention in the rest of the film.
The hero is the representative of the audience
A common dramatic device used in Source Code is simply to
have the audience discover things at the same pace as the main character. What
I mean is, the main character is essentially the surrogate for the viewer.
For instance, they open the film with the hero waking up
/coming to in the middle of a conversation with a woman opposite him. This man
doesn't know why he's on a train, how he got there, why this woman opposite him
is talking to him like she knows him well. When he goes to the washroom and
looks in the mirror, he sees another person who looks nothing like him. The audience is as confused as the central
character is.
The ten minute period plays itself out, then there's an
explosion as the train blows up with him on it. Finally, he wakes up somewhere
else altogether completely disorientated.
He didn't need to wake up disorientated, but it suits the writer's
purposes because this way the hero can ask the questions that the audience is
thinking. ie What just happened? How can I have survived a train blast like
that? How come the person I was on the train wasn't actually me?
If the film was to portray the reality of how the hero is
communicating with the Vera Farmiga character, again, it just wouldn't seem
plausible. In reality, the hero is communicating using a part of his brain and
the words he is thinking appear on a screen in front of her. But this would be
difficult to show in a way that hold any interest on a cinema screen. Instead,
during most of the film the hero appears to be inside a pod or machine
communicating with VF via an interactive screen (the pod turns out to be a
construct of his imagination).
Development of the story arcs
The main plot strand, of course, is about finding the
identity of the bomber. Another important strand is the business about 'where'
the hero actually is in physical reality - is he still in Iraq, do the
authorities know where he is, does his Dad know he's still alive? Then there are
parallel strands with the two leading ladies - his growing attachment to one of
the female passengers who died, and also his getting to know the Vera Farmiga
character. This is important for the denouement, where this last character
disobeys orders to send the hero back to the train one final time.
Then there's the hero's relationship with his Father, and
the unresolved issues there - the writer is careful to tidy these up by having
the hero speak to his father on the phone, and pretending to report his own
dying words of reconciliation.
Finally, there's the strand that concerns the actual Source
Code program itself, and whether it's ethical to do what they're doing (the
character of Dr Rutledge is suitably shifty and self-serving).
These arcs are the elements that give structure to the film
- they are what the writer hangs the film on.
Making use of the right twist
It's perhaps interesting that there are various twists the
writer chose not to have as the central denouement. For instance, he
could have had the hero himself unexpectedly turn out to be the bomber, or his
female companion, or both of them - which he doesn't do.
Today's audience is used to watching films and TV with
twists (Usual Suspects, Saw, Sixth Sense, Lost), so the writer's task is made
more complicated by the fact the audience is used to second guessing the writer
- 'Is all this taking place in Purgatory?' 'Is the hero already dead?' 'Is this
all just one big set-up?' The twist
needs to be unexpected, but also satisfying. At the same time, the problem with
having a big twist is that it carries the weight of all that has gone before it
- the rest of the film stands or falls by it.
The eventual twist in Source Code is effective because it's not really a
twist at all, just a satisfying paradox about the nature of reality and
alternate realities.
And finally ...
A few final thoughts. It occurred to me that Source Code is
very much of its time and place. Had it been released a decade ago, I think
there would have been too great a leap of imaginative faith for audience to
make. So I think the film owes a debt to the conventions as established in eg
computer games (where the character can get killed many times over), in eg The
Matrix (where the physical reality the character senses and experiences is an illusion), in
eg Quantum Leap and Being John Malkovich (the idea of inhabiting another
person's body), and in eg Groundhog Day (where the same time period is lived
over and over again).
PS
Did you catch sight of that reflection at the end of the
film - I'm presuming it was an image of a giant rabbit? (cf Donnie Darko)???