Today, we wonder anxiously if digital media is changing our brains. But if there's any time in history when our mental operations changed fundamentally, it was 18th century Europe, and Britain in particular. During this period, a cognitive revolution took place, powered by an extraordinary new technology: the printing press. Gutenberg's contraption was a curiosity machine. It facilitated the rapid spread and exchange of ideas, corroding old certainties and igniting powerful new ideas. Sir Francis Bacon called the printing press one of three inventions, along with firearms and the compass, that "changed the whole face and state of the world."
Until this point in history, intellectual curiosity — what psychologists call "epistemic curiosity"— had been regarded with deep suspicion by the authorities. The Catholic Church declared it a sin, a dangerous diversion from the contemplation of God's greatness. But now, as the Reformation loosened the grip of Catholic dogma and literacy rates rose, the British embarked on a mass intellectual adventure. According to historian Roy Porter, between 1660 and 1800 more than 300,000 separate book and pamphlet titles were published in England, amounting to something like 200 million copies. The presses churned out how-to/self-help/DIY books, educational treatises, and advice manuals on everything from gardening to gymnastics, carpentry to cookery. Hefty reference books/volumes such as Johnson's Dictionary and the Encyclopedia Britannica were published, along with histories of the arts and sciences. Curiosity became cool.
In parallel with the rise of epistemic curiosity, another kind of curiosity was burgeoning as well: curiosity about the thoughts and feelings of others, including those very different from oneself. We can call this empathic curiosity.
Of course, being interested in what others are up to is a fundamental part of being human; we are a nosy species, compelled to observe and learn from those around us. But from the 18th century on, the desire to understand the minds and dispositions of people very different from us became more urgent, and the ability to do so more sophisticated.
The new locus of curiosity was not the university or the drawing room, but the street. To borrow from Jane Jacobs, the rise of the city provided "what otherwise could be given only by travelling; namely, the strange." Strangers, a rare phenomenon if you lived in a village, were everywhere in the city, and their strangeness invited investigation, or at least speculation. In the room downstairs, or just around the corner, were secret passions, bizarre beliefs, weird customs.
Like many of his contemporaries, James Boswell didn't like the way cities packed people together, but Samuel Johnson saw it as a perk: "It is not in the showy evolutions of buildings, but in the multiplicity of human habitations which are crowded together, that the wonderful immensity of London consists." Johnson's most famous remark — "When a man is tired of London, he is tired of life" — captured the sense of the city as a mystery that could never be exhausted.
The major index of the rise in empathic curiosity was literature: fiction, drama, and poetry. William Shakespeare was born in the same year as Galileo Galilei (1564). Each might be considered a founding figure of empathic and epistemic curiosity, respectively. Around the same time that Galileo turned his telescope to the stars and Sir Francis Bacon codified the scientific method, Shakespeare revolutionized the dramatic soliloquy, allowing ordinary men and women a glimpse inside the hearts and minds of kings.
In the 18th century, a whole new literary form was born: the novel took readers further inside the consciousness of others than any previous kind of story or art form. There proved to be a tremendous popular hunger for such journeys. Daniel Defoe's Robinson Crusoe (1719) had a print run of 5,000 in its first year; Henry Fielding's Amelia (1751) sold as many in its first week. This desire to read about the lives of others went far beyond nosiness. When readers picked up Pamela or David Copperfield, they were finding out something of what it felt like to be another person — to spend time inside the mind of someone from a different sex, age, culture, or class.
In 1759 economist and philosopher Adam Smith argued that each of us can be a "judicious spectator" who imagines as vividly as possible what it is to be "in the situation of the other," and he used literary reading as his model for this new way of thinking. A hundred years later, novelist George Eliot proposed that "the greatest benefit we owe the artist, whether painter, poet or novelist, is the extension of our sympathies."
Contemporary American philosopher Richard Rorty argued that the novel was the "characteristic genre of democracy" because of its role in widening the circle of sympathy people felt for others. Despite being a philosopher himself, he proposed that fiction was a superior tool to reason when it came to bringing people together. A Christian and an atheist, for example, might not be able to reason their way to common sympathy, and may well get into a fight, because the very methods of reasoning they each relied on were parochial, born of the "epistemic communities" of which they are a part. Rorty believed that only fiction has the power to cross the mental barricades, to make strangers intelligible to each other, because it moves people's hearts as well as engaging their minds.
Rorty gave the example of the 1852 novel Uncle Tom's Cabin by Harriet Beecher Stowe, generally acknowledged to have had a profound effect on attitudes toward slavery, due to its powerful portrayal of long-suffering Uncle Tom. The novel sold 300,000 copies in its first year of publication in America and a million in Britain. It is said that when Abraham Lincoln met Stowe, as the Civil War began, he remarked, "So this is the little lady who started this great war." (To me, this doesn't necessarily read as a compliment, though apparently that's how it was received.)
Recently, scientists have become interested in exactly what it is about fiction that makes it so compelling. In 2011 Raymond Mar, a professor of psychology at York University in Canada, published a review of 86 fMRI brain scan studies and concluded that there was substantial overlap be