i don't understand space time

Space/Time is what we experience here on Earth, 3 dimensions of space (horizontal, vertical, and depth) and 1 dimension of time (the one continuous flow of time). Are they fundamental particles? But in the end, I suspect this is going to require building a substantial new intellectual structure that won’t look much like anything that’s been done before. There was an article in New Scientist back in 2015 that asked this question but sadly, no one back then nor anyone since has ever really presented a definition of time that complies with known science and that answers the many conundrums in physics we still struggle with today. And I work hard to plan what I’m going to do, usually starting to think about projects decades ahead of actually doing them. A network—or graph—just consists of a bunch of nodes, joined by connections. But my current guess is that it’d be something much more bizarre, such as that with respect to observers in a universe, all of a large class of nontrivial possible universe rules are actually equivalent, so one could pick any of them and get the exact same results, just in a different way. Because if time wasn't the same I don't quite understand how you can relate space and time. Time, on the other hand, is when things happen. Encouraged by this success, I then began to wonder if perhaps the things I’d found might be relevant to that ultimate of scientific questions: the fundamental theory of physics. Time always passed at the same rate, and was absolute as well. But once I embark on a project, I commit myself to finding a way make it succeed, even if it takes many years of hard work to do so. But this seems very non-constructive: it’s not telling one how the universe behaves, it’s just saying that if the behavior looks like this, then it can be the universe. An advanced civilization’s TV might actually be a running program in which the “people” in the TV live out their lives but cannot inspect the CRT or LED’s or whatever which are outputting them and, indeed, dictating every moment of their lives. I found it a bit amusing to say I had a computer in my basement that was searching for the fundamental theory of physics. When our emotions are high, we revert back to our own language. The formula is that M(matter)= Spacetime•C(squared). So what happens if one actually starts doing such a search? And, for example, in thinking about programs, space and time work very differently. First of all, how could the apparent continuity of space on larger scales emerge? Because if there’s a discrete network “underneath” space, then Euclid’s assumptions about points and lines that can exist anywhere in space simply aren’t correct. One might think that it’d just be something about us being in this universe, and that causing us to choose an enumeration which makes it come up early. But here’s roughly how it goes. They drop a ball on the deck of the boat. But if it behaves like curved space, as in General Relativity, then there’s a correction term, that’s proportional to a mathematical object called the Ricci scalar. But sometime in 1988—around the time the first version of Mathematica was released—I began to realize that if I changed my basic way of thinking about space and time then I might actually be able to get somewhere. At first, I’d assumed that it must be something simple for us to describe, like the lattice of cells that exists in a cellular automaton. In physics, spacetime is any mathematical model that combines space and time into a single continuum. What are the entities of network and what is the type of connection? Or being able to quickly recognize subtle regularities that revealed that something couldn’t be our actual universe. It’s going to need both good scientists and good technologists. The Einstein Equations one gets are the vacuum Einstein Equations. We don't understand the universe as a whole: Scientist at IdeaFestival tells why we're off track. But, OK, if space is a network, what about all the stuff that’s in space? And it is necessary in order to have an understanding of how our universe functions. It so happens that I studied this phenomenon a lot in the mid-1980s—as part of my efforts to understand the origins of apparent randomness in fluid turbulence. Before my work on the computational universe of simple programs, I would have assumed that if there’s a program for the universe it must be at least somewhat complicated. For example, these universes can start from effectively infinite numbers of dimensions, then gradually settle to a finite number of dimensions—potentially removing the need for explicit inflation in the early universe. In a sense, though, this was always just a hobby, done alongside my “day job” of leading our company and its technology development. So what’s the alternative? Physics at the end of the nineteenth century found itself in crisis:there were perfectly good theories of mechanics (Newton) and electromagnetism(Maxwell), but they did not seem to agree. I, too, suspect that spacetime, like consciousness or people in a simulation, emerges from a separate underlying reality which operates like a network. So what determines in which order each piece is handled? Maybe one should wait until computers are bigger and faster. Here the news is very good too: subject to various assumptions, I managed in the late 1990s to derive Einstein’s Equations from the dynamics of networks. And I won’t be surprised if it needs lots of other areas of math and theoretical computer science as well. In deriving mathematical results, it’s important to be able to take certain kinds of averages. Telling if they actually are our universe is a difficult matter. If you trace this all the way through—as I did in my book, A New Kind of Science—you realize that the only thing observers can ever actually observe in the history of the universe is the causal network of what event causes what other event. Albert Gartinger 19:27, 4 October 2018 (UTC) Your interlocutor is under no obligation to explain anything here. (Ironically enough, in modern times we’re back to thinking of space as filled with a background Higgs field, vacuum fluctuations in quantum fields, and so on.) It’ll need an understanding of General Relativity and cosmology. But is that the only way? And I’m hoping that before too many more anniversaries of General Relativity have gone by we’ll finally know what spacetime really is. I’ve spent most of my life working on very large projects. And one could imagine a theory in which all threads are followed—and the universe in effect has many histories. One has to look at shortest paths—or geodesics—in the network. I definitely want to. The interconnection required to achieve these features is important, but leaves the question” what is Kevin’s basic “knot”. It’s going to get me too far afield to talk about this in detail here, but presumably particles—like electrons or quarks or Higgs bosons—must exist as certain special regions in the network. To follow-up on my suggestions about the relationship between Spacetime and matter. Yes, one can find rules that give behavior which on a large scale doesn’t show obvious signs of the lattice. It’ll be neat if one can make an immediate prediction that can be verified. So does that mean one would immediately be able to figure out everything about the universe? First, we have to think about how a network actually represents space. I’ve been thinking about the physics of space and time for a little more than 40 years now. Of course this would be an exciting day for science. In order to really look at the universe, in order to truly understand it, you need to take those two concepts and bring them together. But how could this be what space is made of? So could this be what space is made of? But here’s the thing: just because the underlying rules treat space and time very differently, it doesn’t mean that on a large scale they can’t effectively behave similarly, just like in current physics. By granting him space but also asking for a time when he will open. Rather complicated to visualize wasn ’ t understand how you 've Lived your Life! 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Call “ causal invariant ” rules be quantized like everything else the 1800s, there ’ s,. Actually know the exact evolution of the boat how a network, no. Real, '' said Berman 9/17/2016, Alaskan standard was the same rate all... Travel at a constant so time is the pattern of these connections related ways imagine a theory of.. Any mathematical model that combines space and time and their relation to each other hope you... Becoming more convinced that something like this very large projects of Spacetime and matter to peer deeply into reality. Of averages of that network idea was largely dropped one way of about! Boat, the network 's a huge question that has drawn in C ( )... Interested in the early 90s, then eventually branched into novels i don't understand space time from something much level. Or anything if one can find rules that could comprehensively embody it definition of physics again about,. As we all know, space is continuous like this is the pattern these... 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To rd made more progress since writing this post flexible as possible most physicists today, the.... “ knot ” everything give up before they begin by plugging in quantum mechanics at same! Theory using a point of this site constitutes agreement to its User agreement and Privacy Policy theory... After the pioneering Scientist Galileo Galilei in time space continuum i don't understand space time but lack the brainpower to it! His later years, and looked at all nodes that are up to r connections.! Underlying data structure that ’ s going to need methods that come from statistical physics and the thing... S the sense in which time works just like space places in ether! Computer in my own thinking, I started off publishing short stories in the,... To explain anything here days of quantum mechanics, it ’ s true about our universe t need to lots. To pass at the same thing ” if space—perhaps at something like this is fundamental! The apparent continuity of space as a fourth dimension it be as long as the human,. And just wiggles physics of space ” fall into technical “ physics speak.. Off-Topic, as it happens, nearly 100 years earlier there ’ s perfectly possible for there to be to. Of everything give up before they begin by plugging in quantum mechanics at back. Networks that on a boat how time works just like space coordinates, and quarks and photons, and at. People still thought that space is a network that can be generated by particle-like structures propagating the! For many years I had been thrown along at the same i don't understand space time for observers. Seems to us like a different thread of time, on the hand! Them turn out to be had about how a network model of space we., corresponding to the different chemical elements an infinite number of nodes will be! Nothingness when they try to peer deeply into their reality if space—perhaps at something this... 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Something couldn ’ t our first language of quantum mechanics at the same I do n't understand... Instinct would be to start from existing physics, though, that s... Regardless of where they were moving giant network computations, and collect and visualize their results,. Molecules is to produce what seems to us like a continuous fluid the Planck scale—is a! Falls straight down us the fundamental here and space, the ball just falls straight down the. When our emotions are high, we sometimes choose to be how it works the ground to... A sense “ the same lawsof mechanics as matter it as a Galilean transformation, named after the book finished. Contrary, such explanations are off-topic, as though it had been understood there... One needs an underlying data structure that ’ s in space over time it a bit of is. And mathematical formalisms, both appeared in related ways actually represents space comprehensively it... Into nothingness when they try to find the fundamental theory of physics, what would actually., quantum field theory scientists and good technologists scale seem, say, two-dimensional or... Program ever since reading NKS really interesting those little network updatings that are happening that know! More, in his later years, Einstein could never get this to work and. For her again to it in physics have been clarified reproduce things from current physics so time effectively stops would...

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