In the previous blog posting, I teid to explain the recent findings that synesthesia is a relatively common condition and results from interconnections between the various sensory components in the brain. So, for example, the colour region may be interconnected with the region responsible for identifying letters. With this the letter "B" could be associated with the colour pink So the subject would report B as being pink.
Interconnections such as this have been proposed by the computer scientist David Gelernter as the basis for human reasoning. He did so in a book entitled "The Muse in the Machine" Gelernter recognizes that the mind is a functional part of the human being. It evolved to help the entire being function within its environment and to say the same thing its functions are defined by the need of the human being to function within that environment. The mind is not an abstract device separated from reality as is the common assumption.
Gelernter identifies the bases of the mind's mechanisms as emotions and memory. By emotion, Gelernter means a way by which the organism can capture and characterize its current state. The commonly known emotions of fear and hunger are obvious examples of this but Gelernter expands this to include very fine-grained feelings that blur the lines between the distinct feelings that are commonly viewed as emotions. He shows how a composite feeling of contentment and anticipation on a boat trip can be viewed as a distinct emotion, for example. With this ability to finely characterize a situation by an emotion, the organism can identify similar situations that it met in the past. It can then select its actions based on the success or failure of actions in past similar situations. His view of the mind is similar to the common engineering techniques of case-based and memory-based reasoning.
However Gelernter expands on these common models by showing how his views on emotions link to poetry as an example of a higher human faculty that is commonly thought to be unexplainable at the functional level. Gelernter identifies that the method for matching of situations by emotional memory may by either loosely of tightly focussed. Tight focus is conventional reasoning in which details are important. Loose focus allows apparently disparate situations to be matched based only on the structure of the connections in the constituent emotions. This type of reasoning is what Gerlernter states as the source of creativity. It is what allows a poet to find common ground with his reader as Gelernter demonstrates with his comparison of his idea to T.S. Eliot's 'objective correlative.' Gelernter shows his ideas with examples from the English Romantic poets and from apparently inexplicable passages from the Bible which can be explained as examples of loosely focussed emotional connectivity.