Sunday, August 15, 2010

The Uses of Fiction

Here are some key bits from a post on the NY Times Opinionator blog where philosophers get to strut their stuff. In this case Oxford logician Timothy Williamson addresses 'fiction':
Imagine being a slave in ancient Rome. Now remember being one. The second task, unlike the first, is crazy. If, as I’m guessing, you never were a slave in ancient Rome, it follows that you can’t remember being one — but you can still let your imagination rip. With a bit of effort one can even imagine the impossible, such as discovering that Dick Cheney and Madonna are really the same person. It sounds like a platitude that fiction is the realm of imagination, fact the realm of knowledge.

Why did humans evolve the capacity to imagine alternatives to reality? Was story-telling in prehistoric times like the peacock’s tail, of no direct practical use but a good way of attracting a mate? It kept Scheherazade alive through those one thousand and one nights — in the story.

On further reflection, imagining turns out to be much more reality-directed than the stereotype implies.


In the context of discovery, we get ideas, no matter how — dreams or drugs will do. Then, in the context of justification, we assemble objective evidence to determine whether the ideas are correct. On this picture, standards of rationality apply only to the context of justification, not to the context of discovery. Those who downplay the cognitive role of the imagination restrict it to the context of discovery, excluding it from the context of justification. But they are wrong. Imagination plays a vital role in justifying ideas as well as generating them in the first place.

Your belief that you will not be visible from inside the cave if you crouch behind that rock may be justified because you can imagine how things would look from inside. To change the example, what would happen if all NATO forces left Afghanistan by 2011? What will happen if they don’t? Justifying answers to those questions requires imaginatively working through various scenarios in ways deeply informed by knowledge of Afghanistan and its neighbors. Without imagination, one couldn’t get from knowledge of the past and present to justified expectations about the complex future. We also need it to answer questions about the past. Were the Rosenbergs innocent? Why did Neanderthals become extinct? We must develop the consequences of competing hypotheses with disciplined imagination in order to compare them with the available evidence. In drawing out a scenario’s implications, we apply much of the same cognitive apparatus whether we are working online, with input from sense perception, or offline, with input from imagination.

Even imagining things contrary to our knowledge contributes to the growth of knowledge, for example in learning from our mistakes. Surprised at the bad outcomes of our actions, we may learn how to do better by imagining what would have happened if we had acted differently from how we know only too well we did act.

In science, the obvious role of imagination is in the context of discovery. Unimaginative scientists don’t produce radically new ideas. But even in science imagination plays a role in justification too. Experiment and calculation cannot do all its work. When mathematical models are used to test a conjecture, choosing an appropriate model may itself involve imagining how things would go if the conjecture were true. Mathematicians typically justify their fundamental axioms, in particular those of set theory, by informal appeals to the imagination.

Sometimes the only honest response to a question is “I don’t know.” In recognizing that, one may rely just as much on imagination, because one needs it to determine that several competing hypotheses are equally compatible with one’s evidence.

The lesson is not that all intellectual inquiry deals in fictions. That is just to fall back on the crude stereotype of the imagination, from which it needs reclaiming. A better lesson is that imagination is not only about fiction: it is integral to our painful progress in separating fiction from fact. Although fiction is a playful use of imagination, not all uses of imagination are playful. Like a cat’s play with a mouse, fiction may both emerge as a by-product of un-playful uses and hone one’s skills for them.
And I foolishly thought fabulists were simply the hind end of a peacock!

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