“[SUM] belongs to that category of strange, unclassifiable books that will haunt the reader long after the last page has been turned.”
—Alexander McCall Smith

“SUM has the unaccountable, jaw-dropping quality of genius.”
—Geoff Dyer

“This delightful, thought-provoking little collection belongs to that category of strange, unclassifiable books that will haunt the reader long after the last page has been turned. It is full of tangential insights into the human condition and poetic thought experiments . . . . It is also full of touching moments and glorious wit of the sort one only hopes will be in copious supply on the other side.”
—The New York Times

“Imaginative and inventive.”
—Wall Street Journal

“This little book is teeming, writhing with imagination.”
—Los Angeles Times

“SUM is terrific. It’s such a good idea that I was grinding my teeth all the way through wishing I’d thought of it first. The inventiveness, the clarity and wit of the prose, the calm air of moral understanding that pervades the whole thing, add up to something completely original. I hope SUM will be the great big hit it deserves to be.”
—Philip Pullman, author of The Golden Compass

“A clever little book by a neuroscientist translates lofty concepts of infinity and death into accessible human terms. What happens after we die? Eagleman wonders in each of these brief, evocative segments. Are we consigned to replay a lifetime’ s worth of accumulated acts, as he suggests in ‘Sum,’ spending six days clipping your nails or six weeks waiting for a green light? Is heaven a bureaucracy, as in ‘Reins,’ where God has lost control of the workload? Will we download our consciousnesses into a computer to live in a virtual world, as suggested in ‘Great Expectations,’ where ‘God exists after all and has gone through great trouble and expense to construct an afterlife for us’? Or is God actually the size of a bacterium, battling good and evil on the ‘battlefield of surface proteins,’ and thus unaware of humans, who are merely the ‘nutritional substrate’? Mostly, the author underscores in ‘Will-’o-the-Wisp,’ humans desperately want to matter, and in afterlife search out the ‘ripples left in our wake.’ Eagleman’s turned out a well-executed and thought-provoking book.”
—Publishers Weekly (starred review)

“With both a childlike sense of wonder and a trenchant flair for irony, the Baylor College of Medicine neuroscientist generously offers forty variations on the theme of God and the afterlife, imagining what each of us might find when we shuffle off this mortal coil.... Sum is great fun—sort of a brainy parlor game in print--and a modest satire aimed at zealots who define heaven and God to serve their own ends. It is also a reminder that when it comes to our knowledge of the hereafter, we have loads of faith but not a scintilla of proof.”
—Texas Monthly

“Wow.”
—New York Observer

“This stunningly original book is little more than a 100 pages long. You can get through it in an hour, but you’d be mad to hurry, and you will certainly want to return to it many times . . . . The real question, Eagleman indirectly reminds us, is how to live. This is what makes his book greater than the sum of its brilliant parts. Its success depends on a combination of exquisitely rendered detail and the massive implications that result . . . . It seems exquisitely adapted to fill the contemporary longing for a kind of secular holy book.”
—Geoff Dyer, author of Jeff in Venice, Death in Varanasi, in The Guardian

“Witty, bright, sharp and unexpected . . . as surprising a book as I’ve read for years.”
—Brian Eno

“David Eagleman’s SUM is a captivating collection of vignettes that portray possible afterlives–creatively conceived and deftly described. Each tale imagines an unexpected reality that might await us, possible worlds that illuminate life with colors rarely encountered.”
—Brian Greene, author of The Elegant Universe

“SUM is an imaginative and provocative book that gives new perspectives on how to view ourselves and our place in the world.”
—Alan Lightman, author of Einstein’s Dreams

DAVID EAGLEMAN grew up in New Mexico. As an undergraduate he majored in British and American Literature before earning his PhD in Neuroscience. He heads the Laboratory for Perception and Action at Baylor College of Medicine, and is founder and director of the Initiative on Neuroscience and Law. At night he writes fiction.

Sum

In the afterlife you relive all your experiences, but this time with the events reshuffled into a new order: all the moments that share a quality are grouped together.

You spend two months driving the street in front of your house, seven months having sex. You sleep for thirty years without opening your eyes. For five months straight you flip through magazines while sitting on a toilet.

You take all your pain at once, all twenty-seven intense hours of it. Bones break, cars crash, skin is cut, babies are born. Once you make it through, it’s agony-free for the rest of your afterlife.

But that doesn’t mean it’s always pleasant. You spend six days clipping your nails. Fifteen months looking for lost items. Eighteen months waiting in
line. Two years of boredom: staring out a bus window, sitting in an airport terminal. One year reading books. Your eyes hurt, and you itch, because you can’t take a shower until it’s your time to take your marathon two-hundred-day shower. Two weeks wondering what happens when you die. One minute realizing your body is falling. Seventy-seven hours of confusion. One hour realizing you’ve forgotten someone’s name. Three weeks realizing you are wrong. Two days lying. Six weeks waiting for a green light. Seven hours vomiting. Fourteen minutes experiencing pure joy. Three months doing laundry. Fifteen hours writing your signature. Two days tying shoelaces. Sixty-seven days of heartbreak. Five weeks driving lost. Three days calculating restaurant tips. Fifty-one days deciding what to wear. Nine days pretending you know what is being talked about. Two weeks counting money. Eighteen days staring into the refrigerator. Thirty-four days longing. Six months watching commercials. Four weeks sitting in thought, wondering if there is something better you could be doing with your time. Three years swallowing food. Five days working buttons and zippers. Four minutes wondering what your life would be like if you reshuffled the order of events. In this part of the afterlife, you imagine something analogous to your Earthly life, and the thought is blissful: a life where episodes are split into tiny swallowable pieces, where moments do not endure, where one experiences the joy of jumping from one event to the next like a child hopping from spot to spot on the burning sand.



Egalitaire

In the afterlife you discover that God understands the complexities of life. She had originally submitted to peer pressure when She structured Her universe like all the other gods had, with a binary categorization of people into good and evil. But it didn’t take long for Her to realize that humans could be good in many ways and simultaneously corrupt and meanspirited in other ways. How was She to arbitrate who goes to Heaven and who to Hell? Might not it be possible, She considered, that a man could be an embezzler and still give to charitable causes? Might not a woman be an adulteress but bring pleasure and security to two men’s lives? Might not a child unwittingly divulge secrets that splinter a family? Dividing the population into two categories—good and bad—seemed like a more reasonable task when She was younger, but with experience these decisions became more difficult. She composed complex formulas to weigh hundreds of factors, and ran computer programs that rolled out long strips of paper with eternal decisions. But Her sensitivities revolted at this automation—and when the computer generated a decision She disagreed with, She took the opportunity to kick out the plug in rage. That afternoon She listened to the grievances of the dead from two warring nations. Both sides had suffered, both sides had legitimate grievances, both pled their cases earnestly. She covered Her ears and moaned in misery. She knew Her humans were multidimensional, and She could no longer live under the rigid architecture of Her youthful choices.

Not all gods suffer over this; we can consider ourselves lucky that in death we answer to a God with deep sensitivity to the byzantine hearts of Her creations. For months She moped around Her living room in Heaven, head drooped like a bulrush, while the lines piled up. Her advisors advised Her to delegate the decision making, but She loved Her humans too much to leave them to the care of anyone else.

In a moment of desperation the thought crossed Her mind to let everyone wait on line indefinitely, letting them work it out on their own. But then a better idea struck Her generous spirit. She could afford it: She would grant everyone, every last human, a place in Heaven. After all, everyone had something good inside; it was part of the design specifications. Her new plan brought back the bounce to Her gait, returned the color to Her cheeks. She shut down the operations in Hell, fired the Devil, and brought every last human to be by Her side in Heaven. Newcomers or old-timers, nefarious or righteous: under the new system, everyone gets equal time to speak with Her. Most people find Her a little garrulous and oversolicitous, but She cannot be accused of not caring.

The most important aspect of Her new system is that everyone is treated equally. There is no longer fire for some and harp music for others. The afterlife is no longer defined by cots versus waterbeds, raw potatoes versus sushi, hot water versus champagne. Everyone is a brother to all, and for the first time an idea has been realized that never came to fruition on Earth: true equality.

The Communists are baffled and irritated, because they have finally achieved their perfect society, but only by the help of a God in whom they don’t want to believe. The meritocrats are abashed that they’re stuck for eternity in an incentiveless system with a bunch of pinkos. The conservatives have no penniless to disparage; the liberals have no downtrodden to promote.

So God sits on the edge of Her bed and weeps at night, because the only thing everyone can agree upon is that they’re all in Hell.



Circle of Friends

When you die, you feel as though there were some subtle change, but everything looks approximately the same. You get up and brush your teeth. You kiss your spouse and kids and leave for the office. There is less traffic than normal. The rest of your building seems less full, as though it’s a holiday. But everyone in your office is here, and they greet you kindly. You feel strangely popular. Everyone you run into is someone you know. At some point, it dawns on you that this is the afterlife: the world is only made up of people you’ve met before.

It’s a small fraction of the world population—about 0.00002 percent—but it seems like plenty to you.

It turns out that only the people you remember are here. So the woman with whom you shared a glance in the elevator may or may not be included. Your second-grade teacher is here, with most of the class. Your parents, your cousins, and your spectrum of friends through the years. All your old lovers. Your boss, your grandmothers, and the waitress who served your food each day at lunch. Those you dated, those you almost dated, those you longed for. It is a blissful opportunity to spend quality time with your one thousand connections, to renew fading ties, to catch up with those you let slip away.

It is only after several weeks of this that you begin to feel forlorn. You wonder what’s different as you saunter through the vast quiet parks with a friend or two. No strangers grace the empty park benches. No family unknown to you throws bread crumbs for the ducks and makes you smile because of their laughter.

As you step into the street, you note there are no crowds, no buildings teeming with workers, no distant cities bustling, no hospitals running 24/7 with patients dying and staff rushing, no trains howling into the night with sardined passengers on their way home. Very few foreigners. You begin to consider all the things unfamiliar to you. You’ve never known, you realize, how to vulcanize rubber to make a tire. And now those factories stand empty. You’ve never known how to fashion a silicon chip from beach sand, how to launch rockets out of the atmosphere, how to pit olives or lay railroad tracks. And now those industries are shut down.

The missing crowds make you lonely.You begin to complain about all the people you could be meeting. But no one listens or sympathizes with you, because this is precisely what you chose when you were alive.


Descent of Species

In the afterlife, you are treated to a generous opportunity: you can choose whatever you would like to be in the next life. Would you like to be a member of the opposite sex? Born into royalty? A philosopher with bottomless profundity? A soldier facing triumphant battles?

But perhaps you’ve just returned here from a hard life. Perhaps you were tortured by the enormity of the decisions and responsibilities that surrounded you, and now there’s only one thing you yearn for: simplicity. That’s permissible. So for the next round, you choose to be a horse. You covet the bliss of that simple life: afternoons of grazing in grassy fields, the handsome angles of your skeleton and the prominence of your muscles, the peace of the slow-flicking tail or the steam rifling through your nostrils as you lope across snow-blanketed plains.

You announce your decision. Incantations are muttered, a wand is waved, and your body begins to metamorphose into a horse. Your muscles start to bulge; a mat of strong hair erupts to cover you like a comfortable blanket in winter. The thickening and lengthening of your neck immediately feels normal as it comes about. Your carotid arteries grow in diameter, your fingers blend hoofward, your knees stiffen, your hips strengthen, and meanwhile, as your skull lengthens into its new shape, your brain races in its changes: your cortex retreats as your cerebellum grows, the homunculus melts man to horse, neurons redirect, synapses unplu...