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.

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.

She drank the glass with breakfast and poured herself another. By the time she'd gotten Sean off to school (second grade) the edges had been taken off her thoughts and the world seemed as it should be: not too real, but real enough.

This is the last moment of contentment untainted by sorrow, when the brain hesitates before delivering the message to the heart that it knows it must.

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__he ability to change the trajectory of history.

And so Rebecca consigned herself to, not ignorance, but a judicious incuriosity: she decided, for the time being, to live with the constant, cryptic reminders that the scope of another person's soul could never be fully surveyed.

As he drifted off, his father came to visit him, clothed in all his possible shapes.

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.

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

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?

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.

But we think that if a human were to violate conventional causality_''By time traveli

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?

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.

But the hair on her arms did not stand on end; she did not experience any strange instances of déj_ vu; she did not see the ghosts of future selves shimmering before her, shouting stock picks back through time.

You could consider the idea of the multiverse, and think of it as something like a tree__hat 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.

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

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.