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“I can’t comprehend why any black man with even a lick of sense would have the slightest bit of interest in time travel. Going backward in time? A black man? You have got to be out of your mind.”
― Dexter Palmer, Version Control

“But life isn't neat the way a story is. And if you try to pretend it is, then you just make yourself unhappy, or screw yourself over.”
― dexter palmer, Version Control

“The thing that's hard about it—the thing that makes it so hard when the person you love has been taken from you, not by something evil you could have seen coming but by random, pure chance—is that you find yourself suddenly living through a history other than the one you expected to live, through no fault of your own. I feel . . . it's hard to describe, but I feel weirdly outside of time. Ever since the accident I've had these moments when I felt like a visiting guest in this world, not a permanent resident. Like sometimes I look in a mirror and I feel like I can almost see through the version of me on the other side of the glass. And sometimes I feel like I can see the history I used to be in more clearly than the history I'm in now—the real history is one where Philip and Sean and I are all together, being a family and doing whatever family things people do, and this one's like . . . like a fake version of events that I've been yanked into, where everything's gone wrong.”
― Dexter Palmer, Version Control

“First, the idea of the multiverse is essentially the fantasy of preserving perfect information. One of the hard things to deal with in life is the fact that you destroy potential information whenever you make a decision. You could even say that's essentially what regret is: a profound problem of incomplete information. If you select one thing on a diner's menu, you can't know what it would have been like to taste other things on it, right then, right there. When you marry one person, you give up the possibility of knowing what it would have been like to have married any number of others. But if the multiverse exists, you can at least imagine there's another version of you who's eating that other thing you thought about ordering, or who's married to that other man you only went on two dates with. Even if you'll never see all the information for yourself, at least you'll be able to tell yourself that it's there.

'The second reason the multiverse seems like such a neat idea is that it gives human beings just an incredible amount of agency, which they can exercise with the least effort. Why, Carson here created an entire alternate universe when he ordered hash browns on the side of his French toast instead of bacon�'

'Ah, I should have gotten bacon, how could I forget,' Carson said, and attempted to hail the waitress.

'But the history of science shows that any theory that covertly panders to the human ego like that, that puts humans at the center of things, is very likely to be found out wrong, given enough time. So, just for the sake of argument, let's assume that there's just this one universe, and we're stuck with it. What happens to our time traveler then?”
― Dexter Palmer, Version Control

“And as Sean climbs into bed and closes his eyes, Mother comes, riding astride a lion the size of a house, blowing a clarion from a horn made out of a hollowed-out elephant's tusk. Her eyes have a faint crimson glow from the lasers that are mounted behind her irises, ready to fire at will.

'I touched a prince's chest today and made his heart stop,' she says. 'I'll do it again if I have to: they'll see what happens if anyone gets in my way. Good night, my son. Remember that I will always keep you safe; that I am always everywhere and always here.'

'Good night, Mom,' Sean says, and falls asleep.

And Mother recedes, wise and beautiful and strong, a genius and a hero, a punisher of thieves and a slayer of wicked men, to watch over her son in all her different versions.”
― Dexter Palmer, Version Control

“It is always at this time, just before he slips into unconsciousness, when the voice comes to him: not as loud and snide and insistent as it once was, but still there, still hounding him from behind, still trying to drive him stumbling forward. Is this the best you can do?

Tonight, for the first time in many, many years, Philip chooses not to ignore it: he answers. It is. It really is.

Then say it, and shout down the darkness.

'It is," Philip whispers between clenched teeth as Alicia mumbles and stirs in her slumber. 'It is!”
― Dexter Palmer, Version Control

“But I can tell you this: that I am deeply proud of Rebecca. That she made a split-second decision to save the life of her son, turning the wheel of her vehicle so that her side of it would be impacted by an oncoming car instead of his. She gave her life in the exercise of the greatest gift that God grants us—the ability to change the trajectory of history.”
― Dexter Palmer, Version Control

“But we think that if a human were to violate conventional causalityâ€�'

'By time traveling�'

'Please, please don't call it that. If a human were to violate causality, the experience from her point of view would be similar. You would act while in the past, but not be able to recall your actions later, because that period of time for you would be lost between histories: the old one you left and the new one to which you would return. It would exist outside of the normal course of events. It would be, in a very real sense, lost time.”
― Dexter Palmer, Version Control

“There was a graduate student in my cohort, this guy I dated, who told me he came to realize that doing physics is like this: there's a concrete wall twenty feet thick, and you're on one side, and on the other side is everything worth knowing. And all you have is a spoon. So you just have to take a spoon and start scraping at the wall: no other way. He works in a bookstore now.

But I think of it this way. There is a jigsaw puzzle. It's infinitely large, with no edges or corners to help you out. We have to put it together: it's our duty. We will never finish, but we have to find our satisfactions where we can: when we place two pieces together that suggest we may have found the place where the sky touches the sea, or when we discover a piece that is beautiful in and of itself, that has an unusual color or a glimpse of an unexpected pattern. And the pieces that do not join together also tell you something. If there are very few eureka moments, then at least there are a thousand little failures, that point the way toward a hundred little joys.”
― Dexter Palmer, Version Control

“But I cannot accept a vision of You as an engineer who spends His days maintaining the machine of morality. I cannot take the idea of You as an optimizer, introducing evil into human affairs in an attempt to create the best of all possible worlds. I cannot bear this cold mathematician's God who sees all the universe as nothing more than an elaborate problem to be solved. Such a world is a world with no meaning, one in which one history is no more or less preferable to any other.”
― Dexter Palmer, Version Control

“She hadn't gone back in time. The idea was silly.

Or had she? Had she knocked on the door of her home to see a younger version of herself answer; had there been a mutual shock of recognition (as the younger Rebecca realized that, yes, her husband's work was due to be a success, that he was not wasting his time chasing rainbows and tilting at windmills); had she slipped her arm into that of her past self (feeling a slight electric tingle as skin touched skin and a taste in her mouth as if she'd touched a nine-volt battery to her tongue) and said, We need to to talk? Had she sat in a coffee shop, conversing with a woman who everyone assumed was related to her in some wayâ€�Oh my god you two are so cute, you're mother and daughter but you look like sisters? Had she made some kind of idle remark overheard by a man on his way to spend two weeks' vacation in North Dakota; had that comment convinced that man to settle there permanently instead, and to contact those who had political sympathies similar to his own? Had that unknown man begun the slow process of taking over the state by placing his allies in the local governments if he could? Had that strategy failed, leaving brute force as a regrettable last resort?”
― Dexter Palmer, Version Control

“As he drifted off, his father came to visit him, clothed in all his possible shapes.”
― Dexter Palmer, Version Control

“I shouldn't tell you this, but I've been having these weird dreams like every single night for three weeks now where I'm being contacted. Not by ghosts, exactly, but people from other histories, where things turned out differently than they did here. And they're all envious. And they all say: You are so lucky. You live in the best of all possible worlds. And you don't even know it.”
― Dexter Palmer, Version Control

“He felt that race was not a characteristic that was a part of his identity, but one that was projected upon him by the gaze of others who looked on him; as such it was ephemeral, there and gone as soon as the gaze was broken.”
― Dexter Palmer, Version Control

“The causality violation device may be doing something else. May have already done it. Something wonderful and terrible.”
― Dexter Palmer, Version Control

“The scientific method entails two assumptions that are so basic that, even if you spell them out, they are still difficult to keep in mind. First: that the observer stays the same while the world changes. Second: that cause precedes effect.

But the very nature of the experiment we are conducting means that the second of these assumptions is thrown into doubt. We are deliberately attempting to engineer an event in which effect chronologically precedes cause.

If one of these assumptions is under threat, why not the other?”
― Dexter Palmer, Version Control

“If the future changed, and the time traveler we're talking about was from that future, and was the product of events that created that future, why wouldn't the time traveler also change when those events changed?”
― Dexter Palmer, The Dream of Perpetual Motion

“You could consider the idea of the multiverse, and think of it as something like a tree—that is, the universe we live in is one of an uncountable number of branches of possible universes, created by random chance and the decisions of sentient beings. So, for instance, when I rang you up in the morning, there was a possible future universe in which you answered the phone, and another in which you did not, and by answering the phone you put us in one universe and not the other. In that instance the time traveler doesn't just move from the future to the past and back to the future: he moves down one branch of the universe, toward the root that's back at the beginning of time, and back up another branch.”
― Dexter Palmer, Version Control

“What we are proposing,' Alicia said, 'is that the laws of physics are such that causality violation is subject to a form of version control, one that prevents a forking of history. That instead of causality violation creating an alternate universe, one version of history is outright overwritten by another. One past is replaced with another future. Which means that the memories of the past of the people in that future are replaced with memories of a different past.'

Carson interrupted. 'Including the memories of any�'

'Purely hypothetical�'

'—time travelers.'

'So take our time traveler from the traditional story,' Carson continued. 'He leaves his utopian future for the past. He kills the butterfly. The Magna Carta is never written. He returns to the dystopian future that his misstep created. But he doesn't see it as a dystopia: he sees it as home, the world he grew up in, the world he left to go back in time. Because he doesn't remember that first future, and has no other world to which he can compare this one. Maybe he even sees it as a utopia. Maybe everyone does. Maybe everyone in this dark place believes that they live in the best of all possible worlds.”
― Dexter Palmer, Version Control

“Then you would have acted to change history, but you would have replaced one history with another. You would not be able to know what past version of history you would have altered, because that history would never have happened. Nor would you be able to know what you had done in the past, or that you had done anything at all in the past, or that you had even been to the past. You would not be able to compare histories in your mind; if you entered the causality violation device knowing this, then you would realize that you would be trading one set of memories for another, and that there would never be any evidence, in your mind or in the world, that you had done this.”
― Dexter Palmer, Version Control

“She closed her eyes, and as had been her habit over these past couple of days, she began to imagine possible past histories and what she might have done to change them into the new one in which she lived, either inadvertently, or out of a misguided attempt to play God and make the world a better place, or, worse, with malice aforethought. Any time she spent in the past would have been clipped out of history, as neatly as if it had never happened, because it hadn't happened.”
― Dexter Palmer, Version Control

“Time travel would give humanity the ability to alter the past and prune the tree of all possible futures of those branches that had been infected by evil; with enough revisions humans would eventually bring about the one version of history that was fully good.”
― Dexter Palmer, Version Control

“We're in a time machine, Terence, you and I, right now. It's stuck in one gear and it's slow as hell, but it works. It's bringing us into the future. And I think that future might actually be good. I think it might be okay.”
― Dexter Palmer, Version Control

“I like Carson. I really like Carson. I can hand an idea to him that's still a little rough, and he can turn it over and tumble it and hand it back to me shining. And I can do the same for him.”
― Dexter Palmer, Version Control

“Nothing is as it should be. Everything is upside down.

But I know I can fix this. I can do it.”
― Dexter Palmer, Version Control

“Everything is as it should be; all is in its place. This is what Philip Steiner thinks.”
― Dexter Palmer, Version Control

“That's one of our speculations, by the way. That the prior version of history that this one overwrote was horrible. Complete geopolitical mayhem; half of New York City is underwater. The United States is headed toward civil war, or ruled by an artificial-intelligence construct, or some such other thing. Real end-of-days stuff. That the instances of ourselves who existed in that history figured out what we have: that the invention of the causality violation device was the cause. That in that prior version of history, Rebecca did not die in a car accident. That she went back to the past on a mission, as a volunteer, well aware of her sacrifice.”
― Dexter Palmer, Version Control

“The device,' Philip said. 'What are you going to do with it?'

'I know how this sounds. But you'll have to trust us. We'll take possession of it. We're going to dismantle it; when we do so, the wormhole will close, making this the final version of history we live through. Then we're going to box up the device and forget about it. Lose it somewhere; burn the records. It'll end up in a warehouse right next to the Ark of Covenant.”
― Dexter Palmer, Version Control

“People from the military have been inside that thing. If I went back in time, I wouldn't necessarily be thinking geopolitically, but maybe they would. That has to be half the reason why they're funding us in the first place. Maybe there were earlier versions of history where Republicans didn't vote to pulp all those Andrew Jackson twenties and replace them with bills that had portraits of Reagan. Maybe in the first version of post-Point Zero history, insurgents in North and South Dakota didn't attempt to secede; maybe we weren't fighting enemies both here and in the Middle East. Or maybe there was a full-on civil war going on in the United States and the current state of affairs is an improvement. We don't know. We can't know. And we can't know the extent to which any of us, sitting here at this table, is responsible.”
― Dexter Palmer, Version Control

“He pulled out his wallet and extracted a twenty-dollar bill, fastidiously folding it in half so that the crease cut across the face of Theodore Roosevelt, with its shining spectacles and its Chesire Cat grin.”
― Dexter Palmer, Version Control