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The bottom line is that time travel is allowed by the laws of physics.

Brian Greene

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Brian Greene
Age: 61
Born: 1963
Born: February 9
Actor
Author
Physicist
Professor
Theoretical Physicist
Writer
New York City
New York
Brian Randolph Greene
Time
Physics
Allowed
Bottom
Laws
Travel
Line
Lines
Law

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Before the discovery of quantum mechanics, the framework of physics was this: If you tell me how things are now, I can then use the laws of physics to calculate, and hence predict, how things will be later.
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The pinpoints of starlight we see with the naked eye are photons that have been streaming toward us for a few years or a few thousand.
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There are many of us thinking of one version of parallel universe theory or another. If it's all a lot of nonsense, then it's a lot of wasted effort going into this far-out idea. But if this idea is correct, it is a fantastic upheaval in our understanding.
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When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level
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Science is the process that takes us from confusion to understanding.
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I have long thought that anyone who does not regularly - or ever - gaze up and see the wonder and glory of a dark night sky filled with countless stars loses a sense of their fundamental connectedness to the universe.
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The central idea of string theory is quite straightforward. If you examine any piece of matter ever more finely, at first you'll find molecules, atoms, sub-atomic particles. Probe the smaller particles, you'll find something else, a tiny vibrating filament of energy, a little tiny vibrating string.
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Over the centuries, monumental upheavals in science have emerged time and again from following the leads set out by mathematics.
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In essence, we string theorists have been trying to work out the score of the universe, the harmonies of the universe, the mathematical vibrations that the strings would play. So musical metaphors have been with us in science since the beginning.
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I enjoy reading blogs, but am not interested in having my spurious thoughts out there.
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But, as Einstein once said, “For we convinced physicists, the distinction between past, present, and future is only an illusion, however persistent.”5
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Physicists are more like avant-garde composers, willing to bend traditional rules... Mathematicians are more like classical composers.
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So: if you buy the notion that reality consists of the things in your freeze-frame mental image right now, and if you agree that your now is no more valid than the now of someone located far away in space who can move freely, then reality encompasses all of the events in spacetime.
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I think the relationship between memory and time is a very deep and tricky one, to tell you the truth. I don't consider memory another sense. I do consider memory that which allows us to think that time flows.
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My best teachers were not the ones who knew all the answers, but those who were deeply excited by questions they couldn't answer.
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How can a speck of a universe be physically identical to the great expanse we view in the heavens above?
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Science is the greatest of all adventure stories, one that's been unfolding for thousands of years as we have sought to understand ourselves and our surroundings.
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I wouldn't say that The Fabric of the Cosmos is a book on cosmology. Cosmology certainly plays a big part, but the major theme is our ever-evolving understanding of space and time, and what it all means for our sense of reality.
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I believe the process of going from confusion to understanding is a precious, even emotional, experience that can be the foundation of self-confidence.
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To tell you the truth, I've never met anybody who can envision more than three dimensions. There are some who claim they can, and maybe they can it's hard to say.
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