The Value of Doubt and the Danger of Certainty

This is one of the most important themes underlying my thinking, and it also helps illuminate the general topic of Science versus Religion.

“Conventional Wisdom,” especially from a religious perspective, would generally view Doubt as a negative thing, and Certainty as something to be celebrated, but I think this is completely backwards. This can easily be understood when considering human nature - people generally long to have absolute certainties in their lives, which can be relied on in times of crisis. Great emotional satisfaction and peace can be experienced when one anchors their world view on matters that they see as rock-solid, beyond doubt, even ‘eternal.’

 

This naturally leads into the topic of Epistemology. There are many definitions, but on a practical level, it asks the question of how do we know what we know (or think we know). I have always been intrigued by optical illusions, where our sensory system is fooled into mis-perceiving reality. This is one of my favorites:

 

 

The squares marked A and B are actually the same shade of grey. The first time I saw this, I was “certain” this couldn’t be true, based on my very clear-cut perception. I had to open up the image in Photoshop in order to prove to myself that my senses were in fact deceiving me, and these were identical shades of grey. And even now that I know the truth, there’s still no way I can persuade my brain to “see” these squares as the same shade of grey.

 

If we can be so easily, and so fundamentally, fooled by our senses, which are at least somewhat “objective” how much more can we be fooled in our thought processes, which are much more ephemeral. As with our visual perceptions, we rely quite a bit on our memory, which we initially think is an accurate representation of reality. It turns out that human memory is quite different from the recording of a videocamera, and is in fact quite susceptible to the cognitive equivalent of optical illusions. One can look at the various personal tragedies from a few years back, associated with the recovery of false memories of child abuse, to see how devastating the results can be if you naively assume that memories are a reliable source of objective truth.  Memories are continually shaped and re-shaped over time, as we recall them, experience new things, etc.

 

If we then enter the world of ‘spiritual experiences’ which are even further separated from objective reality, we can begin to understand how and why these phenomena, whatever their source, origin, or validity, simply can’t be implicitly trusted as objective truth.

 

On this basis, “doubt” should be the starting point when attempting to establish what is and isn’t true, with “certainty” basically being a form of mental illusion.

 

As I have studied the variety of human religious experience, I quickly saw that there are people who are absolutely certain, totally convinced that they have the ‘Truth’, that their subjective, inner experiences, have somehow transcended doubt. The problem is, the various ‘Truths’ that these people teach are typically mutually exclusive. This being the case, how can we possibly base our own understanding of what is objectively True on our own personal, subjective experiences, regardless of how intense, or real they seem to be?

 

The scientific method, however imperfectly utilized by scientists, where conclusions are based on actual evidence, reproducible by anyone who would want to verify them, has an incredible track record of increasing humanity’s knowledge of the world around it, as well as of humanity itself. And because it recognizes that ‘Certainty’ can never be achieved, it is self-correcting, as the relatively recent Einsteinian revolution in Physics demonstrates.

 

The general approach of religious institutions is the exact opposite: it starts with the conclusions. The problem with religious dogma is that it establishes “Truths” which by definition cannot be challenged, with no evidence whatsoever backing it other than the inner experiences and perceptions discussed above. Religious certainty is thus seen as an illusion, however well-intentioned it might be.

 

The following books can be quite helpful in fleshing out the various ideas briefly presented above:

 

• The Seven Sins of Memory - Daniel L. Schacter
• In Praise of Doubt - Peter Berger and Anton Zijderveld
• On Being Certain (Believing You Are Right Even When You’re Not) - Robert A. Burton, MD
• Why We Believe What We Believe - Andrew Newberg, MD and Mark Robert Waldman
• How We Believe - Michael Shermer
• Mistakes Were Made (but not by me) - Carol Tavris and Elliot Aronson