The great American documentarian Errol
Morris published a book last year, A
Wilderness of Error: The Trails of Jeffrey MacDonald (Amazon).
For those uninformed about the case, Jeffrey MacDonald, a Green Beret doctor
called the police for help on February 17, 1970 from his home in Fort Bragg,
North Carolina. The police arrived to a horrific scene, with his pregnant wife
and two young daughters slaughtered brutally. MacDonald claimed that they had
been killed by a band of drug-crazed hippies. Over the next several years,
MacDonald went from presumed victim, supported by his ex-in-laws when first
implicated in the murders, to the lead suspect. Nine years after the killings
he was finally brought to justice, and remains in prison today. Joe McGinniss
had followed the case as it unfolded and later wrote a book Fatal Vision made into a blockbuster TV
miniseries in the 80s.
I decided to show my students the
Morris film The Thin Blue Line earlier
this week and happened upon Fatal Vision free
on YouTube. As I was doing some other work, I half watched the film and then
was drawn to do some research online to find out what ultimately happened to
MacDonald. While doing that research, I came upon the following clip from
Morris: You Tube. Here and in the book, Morris claims
that most of what we know about the MacDonald case is based on pure fiction and
that it is quite possible that an innocent man has sat in prison for over 30
years. This, of course, follows the case he compiled in The Thin Blue Line, which actually freed a man stuck on Death’s Row
for 10 years for a crime he didn’t commit.
What both cases show us is the
considerable danger that emerges from Confirmation
Bias – the tendency of people to favor information (or evidence) that
supports their beliefs or hypothesees. Morris puts it succinctly in the form of
a question: “Does a theory in some ways determine the kinds of evidence that
you look for and the kind of evidence that you reject?” The answer to this
question is a resounding yes and well known to anyone that studies human
behavior. People do not look through innocent or objective eyes, they look
through eyes attached to their brains and thus heavily influenced by their
tastes, experiences, background, beliefs, values, knowledge and the like. And
as people try to make sense of the world and establish their ways of being in
it, the ways of seeing they have developed within their cultural milieu heavily
influence that ontology.
Turning to the world of politics, we
see a fundamental problem with the world we live in today. I have already
discussed the issue of selection bias on this blog – where the framing of the
available options heavily influences the choices people make. Here I consider
the related concept of confirmation bias. Essentially, in a world where it is
easier to find news and media that support your general worldview and to avoid
or ignore media that doesn’t, can it be argued that confirmation bias has only
grown in significance? It certainly appears that we are entering more and more
irrational times, where people simply ignore evidence or arguments that
challenge their belief systems. Sure this is true of conservatives, with
studies showing that they only strengthen their resolve when confronted with
counterfactual evidence, but it appears to be true across the political
spectrum – with people holding so steadfast to their opinions, there is no room
for reason or transformation to actually occur. How can we negotiate in a world
where people are trapped in their own ideologies, unable to see outside them?
Does democracy really have a deeper meaning if it merely becomes majority rule?
What roles do technology and education play in reinforcing, or potentially
challenging, these trends? I think these are all questions we should explore in
great detail, determining ways to expand the presumed the array of choices
available (selection bias) and to give people the open-mindedness and critical
thinking skills to overcome our collective penchant toward constantly
confirming whatever we believe; as wrong as we may be.