Many stories begin with a moment of unexpected change. And that’s how they continue too. Whether it’s a sixty-word tabloid piece about a TV star’s tiara falling off or a 350,000-word epic such as Anna Karenina, every story you’ll ever hear amounts to ‘something changed’. Change is endlessly fascinating to brains. ‘Almost all perception is based on the detection of change’ says the neuroscientist Professor Sophie Scott. ‘Our perceptual systems basically don’t work unless there are changes to detect.’ In a stable environment, the brain is relatively calm. But when it detects change, that event is immediately registered as a surge of neural activity.
It’s from such neural activity that your experience of life emerges. Everything you’ve ever seen and thought; everyone you’ve loved and hated; every secret you’ve kept, every dream you’ve pursued, every sunset, every dawn, every pain, bliss, taste and longing – it’s all a creative product of storms of information that loop and flow around your brain’s distant territories. That 1.2-kg lump of greyish-pink computational jelly you keep between your ears might fit comfortably in two cupped hands but, taken on its own scale, it’s vast beyond comprehension. You have 86 billion brain cells or ‘neurons’ and every one of them is as complex as a city. Signals flow between them at speeds of up to 120 metres per second. They travel along 150,000 to 180,000 kms of synaptic wiring, enough to wrap around the planet four times.
But what’s all this neural power for? Evolutionary theory tells us our purpose is to survive and reproduce. These are complex aims, not least reproduction, which, for humans, means manipulating what potential mates think of us. Convincing a member of the opposite sex that we’re a desirable mate is a challenge that requires a deep understanding of social concepts such as attraction, status, reputation and rituals of courting. Ultimately, then, we could say the mission of the brain is this: control. Brains have to perceive the physical environment and the people that surround it in order to control them. It’s by learning how to control the world that they get what they want.
Control is why brains are on constant alert for the unexpected.
The Science of Storytelling Why Stories Make Us Human, and How to Tell Them Better
Will Storr
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