wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Age wrote: ↑Wed Oct 19, 2022 12:54 am
What BELIEF does this so-called 'contemporary physics' hold to 'now'?
Yes, thanks, good question. To recap, @dattaswami said that, "In this universe, every item has another item as its cause," to which I responded, "Contemporary physics no longer holds to that belief." So I should explain myself.
I only have a very layman's understanding of physics obtained from Youtube videos and such. My understanding is that virtual particle / anti-particle pairs spontaneously get created out of "empty" space, meaning space with no matter in it but where a quantum field is present. There's a Wiki article on this, which I did not find very enlightening.
https://en.wikipedia.org/wiki/Pair_production
And whereabouts in the Universe, exactly, is this place where there is, supposedly, NO matter in it but where ONLY a quantum field is present?
Also, does not anyone else find it contradictory to claim that there is this place with, supposedly, no matter in it but where matter actually is. Obviously, if matter is so-called 'spontaneously' getting created, then there IS 'matter', in that place, or space, correct? Or, am I misreading or just missing some 'thing' here?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
In Lawrence Krauss's book, A Universe from Nothing, he notes (I didn't read the book, only read about the book) that this is how the universe came into being.
There are a LOT of people who will LOOK FOR and "FIND" 'things', which they think or BELIEVE will back up and support their CURRENTLY HELD BELIEFS.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
There was "nothing," meaning the primordial quantum field and the laws of physics, but no matter. Then there was a spontaneous creation of stuff, and the universe was off and running. There was no "cause."
But the so-called 'spontaneous creation of stuff' would be the 'cause'. Oh, AND the supposed and alleged so-called 'primordial quantum field' AND 'the laws of physics' AS WELL, of course.
Which, by the way, MUST OF been existing forever or eternally
[/quote]
This Wiki page also leaves a lot to be desired, as it says nothing about Krauss's argument.
https://en.wikipedia.org/wiki/A_Universe_from_Nothing
I could say more, but really this is pretty much what I know. Particle / anti-particle pairs spontaneously come into existence without any cause at all. [/quote]
Do you KNOW this FOR SURE? Or, is this some 'thing' that you have been told, or heard?
Oh, and by the way, what you talk about here is HOW the supposed 'inconsistency' between physics at the 'quantum level' and 'classical level' can be and WAS resolved.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
And in the beginning of the universe (according to Krauss), before there were time and space, but after there were the primordial quantum fields and the laws of physics (begging the question of where THEY came from), one day there was a spontaneous symmetry-breaking or some such (very hazy on the details here) and the universe was born.
Okay. But it is great to SEE signs of True INTELLIGENCE here within 'you' "wtf".
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
This is my general understanding of how modern physics works.
'Modern' is a very relative term, hey?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
But even without the cosmological stuff, quantum physics doesn't have causes, and perhaps this is a more down-to-earth example of what I was getting at. A particle might have spin-up or spin-down, and before we observe it, it doesn't meaningfully have a spin. In fact we could wish that it has a spin but we just don't know what it is.
'We' WOULD KNOW IF and WHEN some one tells us what the 'it' word means or is referring to here, EXACTLY.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
But experiment has pretty much ruled that out. Before we look, particles don't have properties. And which properties we observe when we do look, is a matter of probability. There are no causes.
Does this mean that if NO one is looking at the sun, then the particles of the sun do NOT have properties, and thus then the sun would NOT shine?
If yes, then okay?
But if no, then what do you mean here?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Physics no longer has causes, at least at the quantum level. As I say, this is my understanding, and this was the basis of my remark, but I'm not a physicist and I'm sure I am leaving out a lot of important fine points.
Are you basing 'contemporary physics' on what one author said about "a Universe from nothing" and some alleged pairs of particles/non particles 'popping' into creation
Age wrote: ↑Wed Oct 19, 2022 12:54 am
Surely 'it' does NOT HOLD the BELIEF that there are items that are caused by NO items at all, or am I wrong here?
This is my understanding. Before we do an observation, there is no fact of the matter about the state of a particle.[/quote]
But this would be like saying, " Before we look at or observe some 'thing' we do not know about that 'thing' ", for example its EXACT state or position, or in other words, 'about the state of that 'thing', which is just PLAIN OBVIOUS is it not?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
The result of the observation is probabilistic. There is nothing that "causes" us to observe one state or the other.
I may have completely misunderstood you here, but is it not just our curiosity, and our ability to observe, what causes us to observe one state or the other?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Now whether the physics is right or wrong, or my understanding is right or wrong or somewhere in between (or nowhere at all till you observe it!), this is my explanation of why I wrote what I did. In modern physics, causation is out. Stuff just happens probabilistically for no reason at all; including, and in particular, the creation of the universe.
Wow, you have JUMPED from one CONCLUSION to ANOTHER CONCLUSION, to ANOTHER CONCLUSION, VERY QUICKLY here.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Of course one could say that God made the primordial quantum fields and the laws of physics.
And one could say a multitude of OTHER things as well.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
One never gets past one's intuition of looking for causes.
Okay, if you say so.
But WHY do you think or believe that you can NEVER get past your intuition of looking for causes?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Age wrote: ↑Wed Oct 19, 2022 12:54 am
But there WAS NO 'first cause', and this is just because of what the Universe IS and how 'It' WORKS, EXACTLY.
I'm not sure what you mean here, referring to the integers or the universe. My example of the integers is only intended to point out that we have a model in which:
* Each thing (event, number, however you interpret it) has an immediate predecessor; yet
* There is no first integer.
Rather, the entire sequence of integers, endless in both directions,
just is. There need not be a first cause. Unless you're asking who caused the integers to exist. Well as Kronecker said,
The integers are the work of God. All the rest are the work of man.
I was NOT asking ANY such thing.
In fact I was NOT asking ANY thing, AT ALL. As PROVED by the Fact I NEVER asked ANY question.
I was just STATING A Fact.
And, if you really wanted to KNOW whether I was meaning 'integers' or 'the Universe', then I would have TOLD you, that is; if you HAD ASKED.
Also, you seem to have an 'it' was EITHER 'no causes' OR 'God', and do not seem to be ready for ANY other POSSIBILITY.
NO
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Heck if I know.
WHY did you reply here as though you ALREADY KNEW what my answer would be?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Philosophers argue about that.
But 'that' is ABSOLUTELY NOTHING I have even 'thought', let alone EVER 'talked about' or 'mentioned' ANYWHERE.
You are JUMPING AHEAD here.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Did humans invent them?
What is 'them'? Are you STILL talking about 'integers'?
If yes, then I would say, 'Yes'.
But if no, then what is 'them', EXACTLY?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
Or do they have some kind of Platonic existence even in the absence of living things in the universe?
But 'numbers' were invented by human beings.
What numbers refer to, have existed, ALWAYS.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
I truly don't know. I suspect humans made them. We have an intuition about the infinite. Where that comes from, I don't know.
Where that 'intuition' comes from is from WITHIN, where thee ACTUAL and IRREFUTABLE Truth LAYS, like, for example, that the Universe is infinite AND eternal.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
If someone says that God made the universe, I have no problem with that. Except to ask who made God.
If someone says that the Universe came from 'the primordial quantum field', AND, 'the laws of physics', to you, do you also have no problem with that, except to ask who made 'the primordial quantum' and/or 'the laws of physics' also, or do you NOT ask about them? '
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
If God just always was, without needing to be caused, why couldn't we just say that the universe always just was, without needing to be caused, and thereby dispense with the need for God?
But the Universe ALWAYS JUST IS, and It NEVER needed to be caused.
But there is NO need for God, just like there is NO need for ANY other word.
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
That's my challenge to @dattaswami. If there must be an original uncaused cause, why can't it just be the universe itself, rather than positing "God" who was an uncaused cause that created the universe?
WHY can the word 'God' not just be a synonym for 'Universe'?
wtf wrote: ↑Wed Oct 19, 2022 8:11 am
It's an extra level of indirection that's not needed.
What thee ACTUAL Truth IS, EXACTLY, is ALL rather VERY SIMPLE and EASY, REALLY.