Tuesday, May 1, 2012

Illusion, Mirage and Optical Agitation as Art



For most people an illusion is merely a harmless visual trick.  Seldom do they ever recognize that illusions are something they perpetuate everyday which most often serve to help them stabilize their understanding of the world.  A failure to realize this fact has produced a number of false beliefs about the role of illusion in art.  Indeed, it would not be stretching the truth to say that many people unknowingly suffer from the illusion that they know about illusions. 

Illusion in the visual arts is sometimes described as the lack of correspondence between the perception of an object and the physical nature of that object.   In other words an illusion is thought to be some sort of visual mistake.  The more common examples of this type of ‘lack of correspondence’ are said to be perspective drawings or paintings where three dimensions are represented on a two-dimensional surface.  Here we are able to perceive depth where no depth actually exists as in this work by Andrew Wyeth titled Christina’s World.
                                     
                                                               


But recognizing the representation of three dimensions on a two dimensional surface is a learned ability; we have learned the convention that allows us to recognize perspective in a painting or drawing.   It is not an illusion.  Colour, light and shadow are also used to depict depth and is probably best illustrated by the works of William Michael Harnett:
                                  

Everyday objects such as a cupboard door, a bugle hanging from a nail, a violin leaning against the frame of the door, sheet music and books painted with an eye for detail and using light and shadow give us the impression of the object in three dimensions.   Abstract artist also experimented with color, light and shadow to give the impression of depth as with the work of Tom Hrusa:


                                                    

But again, we have learned to read paintings of this type, no illusion exists.  Still, there is another type of work called Op Art where the design of the artist is said to create an optical illusion such as this one by D.M. MacKay:
                                     
Perhaps a better description for such works is scintillating art for what is taking place is not so much an illusion as an irritation of the receptor cones in the eye causing a false image of pulsating lines over the fine lines receding to the centre of the work. This brief critique of supposed illusions in the visual arts is important to our understanding of the role of illusion in art and in our daily lives for the art form that most relies on illusion is theatre.   But many theatre historians also have a mistaken view of how an illusion comes about.

Imagine, an alien comes to you and asks you to explain what an illusion is.  How would you go about it?  No doubt you would want to tell him that an illusion is something that is false.  You have heard the oft repeated phrase ‘the illusion of reality’ so you might begin by telling him it is a false reality.  But your alien friend is confused.  ‘What is a reality?’, he asks.  You then explain that a person’s reality comes about as a result of those things they are able to realize about the world.    Your friend will not be put off.

‘What is a false reality?  How will I know one when I see one?’

If you have your wits about you, you will explain that a illusion is not a false object or thing, rather it is a realization that is false.  More correctly an illusion is a false ‘belief’ about reality.  It is a conviction that something is the case when it is not.  Illusions are such things that exist only in a person’s mind.   Many years ago most people believed that the sun revolved around the earth but we now know this to be false.  People who held this belief harboured an illusion and remnants of this illusion are still with us.  We often say the sun rises in the east, crosses overhead and sets in the west merely because it looks that way.  But of course it also looks as if the earth is revolving around the sun.  As an illusion is a belief we cannot describe perspective drawings as illusion unless we could show that someone was actually convinced the depth existed.   Such a situation is highly improbable for the depth could not be perceived unless someone were trained or had trained themselves to do it.  As children we learn to read photographs and drawings much as we learn to read language.

The pleonastic phrase ‘the illusion of reality’ can be found in countless books on art and the theatre and serves to misdirect and confuse our understanding of illusion.  It is a self-evident that an illusion is ‘a false belief about reality’.  We can show this by merely trying to deny it.  When we do deny it we are left holding the position that an illusion is a true belief about reality which is what we most often call knowledge.  Few of us would be prepared to defend the thesis that knowledge is illusion. 

In the art form of theatre illusion is fundamental to our understanding of it.  There can be no theatre without illusion.  Plato was the first to recognize that patrons of the theatre believed in the characters they witnessed in the theatre and he was so concerned that he would not allow actors to participate in his ideal state.  Most theatre historians naively assume that illusion in the theatre came about with the introduction of the perspective set designs of Sebastiano Serlio and his contemporaries in the mid 1500s.   But a perspective painting on a backdrop is no more than what it is.  A set may support the illusion in theatre but it is not responsible for it.  Illusion in theatre can exist when no set is used as in the ancient Greek theatre witnessed by Plato.

It is the actors in the theatre that invoke the illusion and the audience must participate in it if they are to enjoy what theatre offers.  The audience must hold a false belief about the reality of the situation they are witnessing.  No doubt some people will reject the idea that they must believe the characters in theatre.  For these people such a belief would be delusional but delusion is a form of paranoia.  Neither could such a belief be called a hallucination for a hallucination is a perception without an external stimulus.  Belief in the characters that exist in the theatre is a harmless activity that offers us many rewards.  As the philosopher A. P. Griffiths points out, “People cannot be taken to believe things they have never heard of, or could not think.”[i]   It is also true that we can believe anything we can think.  Whether we ought to or not is another matter.

However true this argument may be your alien friend may still not be convinced.  He may counter your explanation with the retort:  “Your neighbour Harry Blogs says that’s codswallop.  He says we don’t have to believe in theatre.  All we have to do is suspend our disbelief.”  What you would have to explain is that the willing suspension of disbelief is a grammatical red herring.   It was conjured up in the nineteenth century by the poet Samuel Taylor Coleridge as a way of getting around the argument that we should only believe what is true.  Coleridge suggested he did not believe poetry or the falsehoods of the stage to be true.  In fact he disbelieved them but in order to enjoy them he would willingly suspend his disbelief; he would not bring it into play.  Since, this has become the catch phrase for many theatre goers.
 
But disbelief is a belief in the contrary proposition.  There is no middle ground here.  To insist that you can willingly suspend your disbelief is much like saying that you promise not to read the previous sentence.  The willing suspension of disbelief starts from the premise that what is seen is false (a category mistake).  For example, ‘it is a falsehood that Hamlet is there’, therefore in order to maintain that we are rational we will admit that we disbelieve that ‘Hamlet is there’.  This means that we must either believe that ‘Hamlet is not there’ or ‘Hamlet is invisible’.  But if we do this we cannot enjoy the play so we must suspend our disbelief!  We ‘suspend’ the possibilities that ‘Hamlet is not there’ or ‘Hamlet is invisible’.  If we admit that we have seen the play the only alternative open to us is to ‘believe’ ‘Hamlet is there’.

When we go to the theatre we must be prepared to say ‘That is Hamlet’ or ‘There is Hamlet’.  We must hold the conviction that this is a correct use of language else we must admit the production to be a bad one or that we are attending the production ill prepared to accept it.  We need to hold a false belief about the reality of Hamlet; we need to create the illusion in order to participate in the hypothesis that is theatre.

Of course your alien friend may still not be convinced.  “What about Brecht?” he asks, “Brecht enlisted the aid of his ‘alienation effect’ to destroy or rid the theatre of illusion.”  You would have to explain that the situation is no different.  Brecht was mistaken. Brecht’s theatre relied on illusion as much as any.  While Brecht more often created role types rather than characters they had to be believed in order to recognize the import of his message.

Launt Thompson

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[i] Griffiths, A. P., ed. Knowledge And Belief, Oxford University Press, London 1973 pp128.

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