Elementary 'particles' are directly quantum field quanta; there is no further structure. These field lumps of field excitations are conveniently called 'elementary particles', but they are not pinpoints and are spread out; an electron has a volume. — PoeticUniverse
Because they don't exist in the here and now? — Agent Smith
If the particles are spread out in space then they obviously have a spatial structure. — litewave
1. The words "was" (i.e., "was nothing") and "then"/"now" (i.e., "then something") in the first paragraph imply a temporal change, but time would not exist until there was "something", so I don't use these words in a time sense. — Roger
↪chiknsld Hi. When you hear physicists talk about something coming from nothing, the nothing they're talking about still contains the laws of quantum physics, quantum fields, abstract concepts like the laws of logic or mathematical constructs. This isn't the absolute "nothing" of the question "Why is there something rather than nothing?". — Roger
My view is that I think that to ever get a satisfying answer to the question "Why is there something rather than nothing?", we're going to have to address the possibility that there could have been "nothing", but now there is "something". Another way to say this is that if you start with a 0 (e.g., "nothing") and end up with a 1 (e.g., "something"), you can't do this unless somehow the 0 isn't really a 0 but is actually a 1 in disguise, even though it looks like 0 on the surface. That is, in one way of thinking "nothing" just looks like "nothing". But, if we think about "nothing" in a different way, we can see through its disguise and see that it's a "something". This then gets back around to the idea that "something" has always been here except now there's a reason why: because even what we think of as "nothing" is a "something". — Roger
How can "nothing" be a "something"? I think it's first important to try and figure out why any “normal” thing (like a book, or a set) can exist and be a “something”. I propose that a thing exists if it is a grouping. A grouping ties stuff together into a unit whole and, in so doing, defines what is contained within that new unit whole. This grouping together of what is contained within provides a surface, or boundary, that defines what is contained within, that we can see and touch as the surface of the thing and that gives "substance" and existence to the thing as a new unit whole that's a different existent entity than any components contained within considered individually. This applies to even inside-the-mind groupings, like the concept of a car (also, fictional characters like Sherlock Holmes, etc.). For these, though, the grouping may be better thought of as the top-level label the mind gives to the mental construct that groups together other constructs into a new unit whole (i.e., the mental construct labeled “car” groups together the constructs of engine, car chassis, tires, use for transportation, etc.). — Roger
It's only once all things, including all minds, are gone does “nothing” become "the all" and a new unit whole that we can then, after the fact, see from the outside as a whole unit. — Roger
In other words, the very lack of all existent entities is itself what allows this new property of being the all grouping to appear. — Roger
Hmmm, that's interesting. A grouping of existence.
What grouping? I think you skipped that part, hehe. Nothing is not a grouping of anything.
Existence was the grouping remember?
In other words, the very lack of all existent entities is itself what allows this new property of being the all grouping to appear.
— Roger
Ah, that's logic. :) Clever trick but logic cannot exist if there is nothing.
You're saying that the first existential grouping is self-created?
You're saying that the first existential grouping is self-created?
Yep, that's what I think. Without having some thing that exists because of whatever's inherent to that thing, I think there will be an infinite regress of explaining one thing in terms of another. So, if "nothing" can, when thought of differently, be seen as an existent entity, this entity would be the beginning point of defining things in terms of other things. — Roger
Yes, I would agree that something is either self-created or that it was always here (infinite regression). :)
Yes, it would be a contradiction for unicorns to exist here and now because they don't exist here and now. If there is an object such as a spacetime whose definition includes that there is no unicorn at a location X inside it, it would be a contradiction if a unicorn was at the location X in such a spacetime. A spacetime with a unicorn at the location X would be a different spacetime, another spacetime — litewave
How is there space without time? — chiknsld
How is there space without time? — chiknsld
Spacetime itself, with everything inside it, just exists, timelessly, eternally. — litewave
As I said, a space is a special kind of collection that has a continuity between its parts. There is a rigorous definition of it in mathematics. A space also has dimensions, which is the number of coordinates necessary to specify a location inside the collection. According to theory of relativity, spacetime is a 4-dimensional space where one of the dimensions, which we call time, has somewhat different mathematical properties than the other three. So in mathematics there is no problem in defining a space, with an arbitrary number of dimensions, without time — litewave
these objects are not a part of a spacetime. They may exist in a space without time — litewave
When you hear physicists talk about something coming from nothing, the nothing they're talking about still contains the laws of quantum physics, quantum fields, abstract concepts like the laws of logic or mathematical constructs. — Roger
Are you saying that mathematics exists? I will grant you that physical objects have properties that can be predicted by mathematics, but that's a far cry from saying that mathematics actually exists, right? — chiknsld
Does logic also exist, etc.? — chiknsld
Are there collections in reality? If so, then reality is mathematical because all mathematics can be expressed in collections. That's what pure set theory has shown. — litewave
Logic is just the principle of consistency. It just means that an object is what it is and is not what it is not. Logic is a necessary fact. And so are collections, because if there are some objects there is necessarily also a collection of them. — litewave
That's great! If quantum fields are "the basis of all that is possible" and "the fundamental strokes", who am I to argue with great literature?! I withdraw my previous criticism of physicists' nothing! :smile:
If you wrote that, nice writing! — Roger
Everything is now physically known about our everyday lives:
https://arxiv.org/pdf/2101.07884.pdf
The argument relies on an assumption that the world is entirely physical...
...physicalism, EFT, Core Theory...has a number of immediate implications. There is no life after death, as the information in a person’s mind is encoded in the physical configuration of atoms in their body, and there is no physical mechanism for that information to be carried away after death.
The location of planets and stars on the day of your birth has no effect on who you become later in life, as there are no relevant forces that can extend over astrophysical distances.
The problems of consciousness, whether “easy” or “hard,” must ultimately be answered in terms of processes that are compatible with this underlying theory...Everything we have said presumes from the start that the world is ultimately physical, consisting of some kind of physical stuff obeying physical laws.
This research is funded in part by the Walter Burke Institute for Theoretical Physics at Caltech, by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632, and by the Foundational Questions Institute.
So how do we bridge the gap between mathematics and matter/energy? — chiknsld
Are you saying that matter always existed and that it's impossible to know how mathematics gave birth to physical creation? — chiknsld
If given only three options: convenience, complexity, or mystery, which would you choose? — chiknsld
I'm not a big fan of Sean Carroll's because his final answer to the question "Why is there something rather than nothing?" is that it's a brute fact. — Roger
What would make it such that The Existent has no alternative? There can't be a sequence in time from 'Nothing' that has no time nor has anything.
Mass/energy is the property of having causal relations to other objects, and causal relations are a special case of mathematical relations in spacetime where consequences logically follow from causes at a later point in the direction of time. — litewave
All possible collections exist timelessly by necessity — litewave
Another problem is that we can only consciously experience that which is in our mind, so not directly the outside world but just its representations in our mind based on perceptual inputs. — litewave
I already said my view, which you had previously quoted, that the seeming temporal change from "nothing" to "something" is like an artifact imposed by our minds. That is, "that the human mind can view the switching between the two different words, or ways of visualizing "the lack of all", as a temporal change from "was" to "now". — Roger
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