Religion

I did vow not to engage further but your shameless straw man argument above leaves me with no choice. Generally, such a tactic is deployed by those who have already lost the argument or are simply too stupid to know it. For the record, I simply expressed amazement that someone could be so arrogant as to think that their crackpot views would receive widespread approval over those of one of the most respected scientists of modern times. In the interests of clarity, I've pasted the extract concerned below.
Your ego must the size of a fucking planet (pun definitely intended) if you sincerely expect anyone to accept your word over that of the pre-eminent physicist and cosmologist of the modern era.
Indeed, instead of repeatedly seeking to reassert your version of the 'truth' each time someone attempts to present a reasoned argument, perhaps offer some irrefutable evidence. Then, we in the real world might sit up and take notice. Until that point, I remain an agnostic atheist. Otherwise, don't misrepresent me.
All you have done is offer argumentum ad hominum remarks .Where is your evidence for something arising out of nothing uncaused?
Where is the evidence of primordial goo to you evolution? i.e. Where is your evidence for particles to people evolution? Where is the radically new information that changes molecules into men over billions of years. Observational science requires evidence. Evolutionists don't have it. That's why its a LIE. Origin science which is also historical science cannot account for the General Theory of Evolution( GTE) so that theory is nothing but a religion as no one was there to observe the huge changes and amounts of new information required to turn one animal into a completely different animal. All we have are the created kinds ( species )
 
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do you really know what atheist means? i'm not sure you do
Webster’s dictionary includes a definition of religion with a nontheistic meaning: “a cause, principle, or system of beliefs held with ardor and faith.”Atheists hold a worldview that fits this definition becuse they have a cause to promote, a naturalistic system of beliefs, and hold them with vigour and faith.
So, as ardently held atheistic humanism, by definition, is a religion.
Therefore:
Can you kindly show the evidence of something coming from nothing uncaused.

Then show the evolution steps or gradations of particles to people. This is the GTE, General Theory of Evolution which says that some primordial ooze evolved into people over billions of years. Where is the evidence? If you have it kindly Show it.
 
which part of your replies have I ignored? You just claimed I threw a name at you and that was it, whilst ignoring the evidence I’ve given you.

The first biographical writings of Alexander the Great came 300 years after he died, it doesn’t mean the man didn’t exist. Nobody would argue he does. Many of the worlds great historical figures, from the ancient world, were written about first in the following centuries. It’s not a barometer of them existing or not, it never has been. The very fact we have 3 sources, both a well known Jewish writer and 2 high ranking Romans, is substantial.

Ehrman is a lapsed Christian who denounced his faith and spends a large chunk of his life arguing and writing against Christianity. If you’re going to call Paul biased for converting the other way, whilst being first century, you cannot then dismiss Ehrman now.

Yes the fact in Paul’s Letters, he discusses Peter’s dispute with himself, is very significant. Not only do we have first century non Christian’s mentioning the brother of Jesus and Jesus himself, we have one of the founders of the early church, mentioning a rift between him and Jesus’s closest friend. If Peter exists that’s significant. If he does then it’s highly likely Jesus does too, unless Peter himself made him up.

I have told you several times why Paul doesn’t talk about Jesus the man, you’re either intentionally choosing to ignore the reason I’ve given or you’re struggling to understand the obvious and simple reason. Paul never met Jesus the man, he never saw him speak and never knew him.

Paul worked for the Sanhedrin and was so entrenched in his Jewish faith that he requested to form a legion of troops to hunt and kill Christians after the crucifixion and after the so-called ascension, which was granted by the Jewish church. He was one of the worst anti-Christians in the first century until he had his “vision”. It’s likely why Peter didn’t take to him and this relationship is key to understanding how Christianity took off and the likelihood of Jesus existing.

You need to read from more scholars and get a better understanding of this topic, and I mean that sincerely.
Empty promises that come from the world will never satisfy in the way that knowing God will satisfy. Jesus said, "Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent" (John 17:3). We can know God through Jesus since He is the only mediator between God and humankind. We don't know Him physically and have never met Him physically but we can know the person of Jesus the Christ via the power of the Holy Spirit. The same thing in relation to Paul. He knew the person of Christ Jesus. All of the Apostles and the whole church are unified in the body of Christ which is a spiritual body and Paul’s apostolic authority was repeatedly questioned
(1 Corinthians 9:2; 2 Corinthians 11) despite his acceptance by the church (Acts 9:19–25 says "For some days he was with the disciples at Damascus. And immediately he proclaimed Jesus in the synagogues, saying, “He is the Son of God.” And all who heard him were amazed and said, “Is not this the man who made havoc in Jerusalem of those who called upon this name? And has he not come here for this purpose, to bring them bound before the chief priests?” But Saul increased all the more in strength, and confounded the Jews who lived in Damascus by proving that Jesus was the Christ."

; Galatians 1:18–20 " Then after three years I ( Paul) went up to Jerusalem to visit Cephas ( Peter) and remained with him fifteen days. But I saw none of the other apostles except James the Lord’s brother. (In what I am writing to you, before God, I do not lie )" . Even today, there are cultic groups that deny the legitimacy of Paul’s ministry. Those who question Paul’s apostolic authority ignore the testimony of Peter, James, and John recognized apostles of Christ and pillars of the early church, who extended “the right hand of fellowship” to Paul and his companion Barnabas (Galatians 2:9 "when James and Cephas( Peter) and John, who seemed to be pillars, perceived the grace that was given to me, they gave the right hand of fellowship to Barnabas and me, that we should go to the Gentiles and they to the circumcised" ). Let's remove any foolish belief that Paul was a counterfeit apostle who preached a spurious message, for the plain teaching of Scripture proves different.

The gospel of Paul was not a different or a counterfeit gospel; the “good news” or “good announcement” he preached conformed in every way to the teachings of the Old Testament writers, the other apostles of the faith, and, most importantly, to the gospel message according to Jesus Christ. If there is a difference in the apostle Paul’s treatment of the gospel, it is not in the essence of the message but in the meticulous detail of the gospel. Indeed, most notably in Romans and Galatians, the apostle Paul, guided by the Holy Spirit, delves into the wonderful heights and unfathomable depths of the gospel unlike any other New Testament writer. Even Peter, the Apostle to the Jews, was moved by the “weightiness” of Paul’s writings (2 Peter 3:15–18 " just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures. You therefore, beloved, knowing this beforehand, take care that you are not carried away with the error of lawless people and lose your own stability. But grow in the grace and knowledge of our Lord and Savior Jesus Christ.To him be the glory both now and to the day of ueternity. Amen.
The Apostles Peter ( Cephas) and James John and Paul were all of one mind in Christ Jesus.
 
Empty promises that come from the world will never satisfy in the way that knowing God will satisfy. Jesus said, "Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent" (John 17:3). We can know God through Jesus since He is the only mediator between God and humankind. We don't know Him physically and have never met Him physically but we can know the person of Jesus the Christ via the power of the Holy Spirit. The same thing in relation to Paul. He knew the person of Christ Jesus. All of the Apostles and the whole church are unified in the body of Christ which is a spiritual body and Paul’s apostolic authority was repeatedly questioned
(1 Corinthians 9:2; 2 Corinthians 11) despite his acceptance by the church (Acts 9:19–25 says "For some days he was with the disciples at Damascus. And immediately he proclaimed Jesus in the synagogues, saying, “He is the Son of God.” And all who heard him were amazed and said, “Is not this the man who made havoc in Jerusalem of those who called upon this name? And has he not come here for this purpose, to bring them bound before the chief priests?” But Saul increased all the more in strength, and confounded the Jews who lived in Damascus by proving that Jesus was the Christ."

; Galatians 1:18–20 " Then after three years I ( Paul) went up to Jerusalem to visit Cephas ( Peter) and remained with him fifteen days. But I saw none of the other apostles except James the Lord’s brother. (In what I am writing to you, before God, I do not lie )" . Even today, there are cultic groups that deny the legitimacy of Paul’s ministry. Those who question Paul’s apostolic authority ignore the testimony of Peter, James, and John recognized apostles of Christ and pillars of the early church, who extended “the right hand of fellowship” to Paul and his companion Barnabas (Galatians 2:9 "when James and Cephas( Peter) and John, who seemed to be pillars, perceived the grace that was given to me, they gave the right hand of fellowship to Barnabas and me, that we should go to the Gentiles and they to the circumcised" ). Let's remove any foolish belief that Paul was a counterfeit apostle who preached a spurious message, for the plain teaching of Scripture proves different.

The gospel of Paul was not a different or a counterfeit gospel; the “good news” or “good announcement” he preached conformed in every way to the teachings of the Old Testament writers, the other apostles of the faith, and, most importantly, to the gospel message according to Jesus Christ. If there is a difference in the apostle Paul’s treatment of the gospel, it is not in the essence of the message but in the meticulous detail of the gospel. Indeed, most notably in Romans and Galatians, the apostle Paul, guided by the Holy Spirit, delves into the wonderful heights and unfathomable depths of the gospel unlike any other New Testament writer. Even Peter, the Apostle to the Jews, was moved by the “weightiness” of Paul’s writings (2 Peter 3:15–18 " just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures. You therefore, beloved, knowing this beforehand, take care that you are not carried away with the error of lawless people and lose your own stability. But grow in the grace and knowledge of our Lord and Savior Jesus Christ.To him be the glory both now and to the day of ueternity. Amen.
The Apostles Peter ( Cephas) and James John and Paul were all of one mind in Christ Jesus.
I wouldn’t consider Paul’s letters to be a “gospel”.
 
Webster’s dictionary includes a definition of religion with a nontheistic meaning: “a cause, principle, or system of beliefs held with ardor and faith.”Atheists hold a worldview that fits this definition becuse they have a cause to promote, a naturalistic system of beliefs, and hold them with vigour and faith.
So, as ardently held atheistic humanism, by definition, is a religion.
Therefore:
Can you kindly show the evidence of something coming from nothing uncaused.

Then show the evolution steps or gradations of particles to people. This is the GTE, General Theory of Evolution which says that some primordial ooze evolved into people over billions of years. Where is the evidence? If you have it kindly Show it
you have been told countless times what atheism is, stop making something it isn't

i don't know what created the big bang and neither do you, but science has a pretty good theory what happened from a millisecond onwards, and it has nothing to do with that fairy story of yours
i would ask you what created your god as you say something doesn't come from nothing
 
How about we all agree that there could be a god it simply depends on what you believe.
Those that do, fine those that dont, fine.

Don't forget the original poster @idahoblues is laughing his bollocks off that this is on 247 pages
this is why it matters

 
let’s take a look at how “material” – physical matter – first came about. If we are aiming to explain the origins of stable matter made of atoms or molecules, there was certainly none of that around at the Big Bang – nor for hundreds of thousands of years afterwards. We do in fact have a pretty detailed understanding of how the first atoms formed out of simpler particles once conditions cooled down enough for complex matter to be stable, and how these atoms were later fused into heavier elements inside stars. But that understanding doesn’t address the question of whether something came from nothing.

So let’s think further back. The first long-lived matter particles of any kind were protons and neutrons, which together make up the atomic nucleus. These came into existence around one ten-thousandth of a second after the Big Bang. Before that point, there was really no material in any familiar sense of the word. But physics lets us keep on tracing the timeline backwards – to physical processes which predate any stable matter.

This takes us to the so-called “grand unified epoch”. By now, we are well into the realm of speculative physics, as we can’t produce enough energy in our experiments to probe the sort of processes that were going on at the time.
But a plausible hypothesis is that the physical world was made up of a soup of short-lived elementary particles – including quarks, the building blocks of protons and neutrons. There was both matter and “antimatter” in roughly equal quantities: each type of matter particle, such as the quark, has an antimatter “mirror image” companion, which is near identical to itself, differing only in one aspect. However, matter and antimatter annihilate in a flash of energy when they meet, meaning these particles were constantly created and destroyed.

But how did these particles come to exist in the first place? Quantum field theory tells us that even a vacuum, supposedly corresponding to empty spacetime, is full of physical activity in the form of energy fluctuations. These fluctuations can give rise to particles popping out, only to be disappear shortly after. This may sound like a mathematical quirk rather than real physics, but such particles have been spotted in countless experiments.

The spacetime vacuum state is seething with particles constantly being created and destroyed, apparently “out of nothing”. But perhaps all this really tells us is that the quantum vacuum is (despite its name) a something rather than a nothing. The philosopher David Albert has memorably criticised accounts of the Big Bang which promise to get something from nothing in this way.

Suppose we ask: where did spacetime itself arise from? Then we can go on turning the clock yet further back, into the truly ancient “Planck epoch” – a period so early in the universe’s history that our best theories of physics break down. This era occurred only one ten-millionth of a trillionth of a trillionth of a trillionth of a second after the Big Bang. At this point, space and time themselves became subject to quantum fluctuations. Physicists ordinarily work separately with quantum mechanics, which rules the microworld of particles, and with general relativity, which applies on large, cosmic scales. But to truly understand the Planck epoch, we need a complete theory of quantum gravity, merging the two.

We still don’t have a perfect theory of quantum gravity, but there are attempts – like string theory and loop quantum gravity. In these attempts, ordinary space and time are typically seen as emergent, like the waves on the surface of a deep ocean. What we experience as space and time are the product of quantum processes operating at a deeper, microscopic level – processes that don’t make much sense to us as creatures rooted in the macroscopic world.

In the Planck epoch, our ordinary understanding of space and time breaks down, so we can’t any longer rely on our ordinary understanding of cause and effect either. Despite this, all candidate theories of quantum gravity describe something physical that was going on in the Planck epoch – some quantum precursor of ordinary space and time. But where did that come from?

Even if causality no longer applies in any ordinary fashion, it might still be possible to explain one component of the Planck-epoch universe in terms of another. Unfortunately, by now even our best physics fails completely to provide answers. Until we make further progress towards a “theory of everything”, we won’t be able to give any definitive answer. The most we can say with confidence at this stage is that physics has so far found no confirmed instances of something arising from nothing.

To truly answer the question of how something could arise from nothing, we would need to explain the quantum state of the entire universe at the beginning of the Planck epoch. All attempts to do this remain highly speculative. Some of them appeal to supernatural forces like a designer. But other candidate explanations remain within the realm of physics – such as a multiverse, which contains an infinite number of parallel universes, or cyclical models of the universe, being born and reborn again.

The 2020 Nobel Prize-winning physicist Roger Penrose has proposed one intriguing but controversial model for a cyclical universe dubbed “conformal cyclic cosmology”. Penrose was inspired by an interesting mathematical connection between a very hot, dense, small state of the universe – as it was at the Big Bang – and an extremely cold, empty, expanded state of the universe – as it will be in the far future. His radical theory to explain this correspondence is that those states become mathematically identical when taken to their limits. Paradoxical though it might seem, a total absence of matter might have managed to give rise to all the matter we see around us in our universe.

In this view, the Big Bang arises from an almost nothing. That’s what’s left over when all the matter in a universe has been consumed into black holes, which have in turn boiled away into photons – lost in a void. The whole universe thus arises from something that – viewed from another physical perspective – is as close as one can get to nothing at all. But that nothing is still a kind of something. It is still a physical universe, however empty.

How can the very same state be a cold, empty universe from one perspective and a hot dense universe from another? The answer lies in a complex mathematical procedure called “conformal rescaling”, a geometrical transformation which in effect alters the size of an object but leaves its shape unchanged.

Penrose showed how the cold dense state and the hot dense state could be related by such rescaling so that they match with respect to the shapes of their spacetimes – although not to their sizes. It is, admittedly, difficult to grasp how two objects can be identical in this way when they have different sizes – but Penrose argues size as a concept ceases to make sense in such extreme physical environments.

In conformal cyclic cosmology, the direction of explanation goes from old and cold to young and hot: the hot dense state exists because of the cold empty state. But this “because” is not the familiar one – of a cause followed in time by its effect. It is not only size that ceases to be relevant in these extreme states: time does too. The cold dense state and the hot dense state are in effect located on different timelines. The cold empty state would continue on forever from the perspective of an observer in its own temporal geometry, but the hot dense state it gives rise to effectively inhabits a new timeline all its own.

It may help to understand the hot dense state as produced from the cold empty state in some non-causal way. Perhaps we should say that the hot dense state emerges from, or is grounded in, or realised by the cold, empty state. These are distinctively metaphysical ideas which have been explored by philosophers of science extensively, especially in the context of quantum gravity where ordinary cause and effect seem to break down. At the limits of our knowledge, physics and philosophy become hard to disentangle.

Conformal cyclic cosmology offers some detailed, albeit speculative, answers to the question of where our Big Bang came from. But even if Penrose’s vision is vindicated by the future progress of cosmology, we might think that we still wouldn’t have answered a deeper philosophical question – a question about where physical reality itself came from. How did the whole system of cycles come about? Then we finally end up with the pure question of why there is something rather than nothing – one of the biggest questions of metaphysics.

But our focus here is on explanations which remain within the realm of physics. There are three broad options to the deeper question of how the cycles began. It could have no physical explanation at all. Or there could be endlessly repeating cycles, each a universe in its own right, with the initial quantum state of each universe explained by some feature of the universe before. Or there could be one single cycle, and one single repeating universe, with the beginning of that cycle explained by some feature of its own end. The latter two approaches avoid the need for any uncaused events – and this gives them a distinctive appeal. Nothing would be left unexplained by physics.

Penrose envisages a sequence of endless new cycles for reasons partly linked to his own preferred interpretation of quantum theory. In quantum mechanics, a physical system exists in a superposition of many different states at the same time, and only “picks one” randomly, when we measure it. For Penrose, each cycle involves random quantum events turning out a different way – meaning each cycle will differ from those before and after it. This is actually good news for experimental physicists, because it might allow us to glimpse the old universe that gave rise to ours through faint traces, or anomalies, in the leftover radiation from the Big Bang seen by the Planck satellite.

Penrose and his collaborators believe they may have spotted these traces already, attributing patterns in the Planck data to radiation from supermassive black holes in the previous universe. However, their claimed observations have been challenged by other physicists and the jury remains out.

Endless new cycles are key to Penrose’s own vision. But there is a natural way to convert conformal cyclic cosmology from a multi-cycle to a one-cycle form. Then physical reality consists in a single cycling around through the Big Bang to a maximally empty state in the far future – and then around again to the very same Big Bang, giving rise to the very same universe all over again.

This latter possibility is consistent with another interpretation of quantum mechanics, dubbed the many-worlds interpretation. The many-worlds interpretation tells us that each time we measure a system that is in superposition, this measurement doesn’t randomly select a state. Instead, the measurement result we see is just one possibility – the one that plays out in our own universe. The other measurement results all play out in other universes in a multiverse, effectively cut off from our own. So no matter how small the chance of something occurring, if it has a non-zero chance then it occurs in some quantum parallel world. There are people just like you out there in other worlds who have won the lottery, or have been swept up into the clouds by a freak typhoon, or have spontaneously ignited, or have done all three simultaneously.

Some people believe such parallel universes may also be observable in cosmological data, as imprints caused by another universe colliding with ours.

Many-worlds quantum theory gives a new twist on conformal cyclic cosmology, though not one that Penrose agrees with. Our Big Bang might be the rebirth of one single quantum multiverse, containing infinitely many different universes all occurring together. Everything possible happens – then it happens again and again and again.

For a philosopher of science, Penrose’s vision is fascinating. It opens up new possibilities for explaining the Big Bang, taking our explanations beyond ordinary cause and effect. It is therefore a great test case for exploring the different ways physics can explain our world. It deserves more attention from philosophers.

For a lover of myth, Penrose’s vision is beautiful. In Penrose’s preferred multi-cycle form, it promises endless new worlds born from the ashes of their ancestors. In its one-cycle form, it is a striking modern re-invocation of the ancient idea of the ouroboros, or world-serpent. In Norse mythology, the serpent Jörmungandr is a child of Loki, a clever trickster, and the giant Angrboda. Jörmungandr consumes its own tail, and the circle created sustains the balance of the world. But the ouroboros myth has been documented all over the world – including as far back as ancient Egypt.

The ouroboros of the one cyclic universe is majestic indeed. It contains within its belly our own universe, as well as every one of the weird and wonderful alternative possible universes allowed by quantum physics – and at the point where its head meets its tail, it is completely empty yet also coursing with energy at temperatures of a hundred thousand million billion trillion degrees Celsius. Even Loki, the shapeshifter, would be impressed.
 
let’s take a look at how “material” – physical matter – first came about. If we are aiming to explain the origins of stable matter made of atoms or molecules, there was certainly none of that around at the Big Bang – nor for hundreds of thousands of years afterwards. We do in fact have a pretty detailed understanding of how the first atoms formed out of simpler particles once conditions cooled down enough for complex matter to be stable, and how these atoms were later fused into heavier elements inside stars. But that understanding doesn’t address the question of whether something came from nothing.

So let’s think further back. The first long-lived matter particles of any kind were protons and neutrons, which together make up the atomic nucleus. These came into existence around one ten-thousandth of a second after the Big Bang. Before that point, there was really no material in any familiar sense of the word. But physics lets us keep on tracing the timeline backwards – to physical processes which predate any stable matter.

This takes us to the so-called “grand unified epoch”. By now, we are well into the realm of speculative physics, as we can’t produce enough energy in our experiments to probe the sort of processes that were going on at the time.
But a plausible hypothesis is that the physical world was made up of a soup of short-lived elementary particles – including quarks, the building blocks of protons and neutrons. There was both matter and “antimatter” in roughly equal quantities: each type of matter particle, such as the quark, has an antimatter “mirror image” companion, which is near identical to itself, differing only in one aspect. However, matter and antimatter annihilate in a flash of energy when they meet, meaning these particles were constantly created and destroyed.

But how did these particles come to exist in the first place? Quantum field theory tells us that even a vacuum, supposedly corresponding to empty spacetime, is full of physical activity in the form of energy fluctuations. These fluctuations can give rise to particles popping out, only to be disappear shortly after. This may sound like a mathematical quirk rather than real physics, but such particles have been spotted in countless experiments.

The spacetime vacuum state is seething with particles constantly being created and destroyed, apparently “out of nothing”. But perhaps all this really tells us is that the quantum vacuum is (despite its name) a something rather than a nothing. The philosopher David Albert has memorably criticised accounts of the Big Bang which promise to get something from nothing in this way.

Suppose we ask: where did spacetime itself arise from? Then we can go on turning the clock yet further back, into the truly ancient “Planck epoch” – a period so early in the universe’s history that our best theories of physics break down. This era occurred only one ten-millionth of a trillionth of a trillionth of a trillionth of a second after the Big Bang. At this point, space and time themselves became subject to quantum fluctuations. Physicists ordinarily work separately with quantum mechanics, which rules the microworld of particles, and with general relativity, which applies on large, cosmic scales. But to truly understand the Planck epoch, we need a complete theory of quantum gravity, merging the two.

We still don’t have a perfect theory of quantum gravity, but there are attempts – like string theory and loop quantum gravity. In these attempts, ordinary space and time are typically seen as emergent, like the waves on the surface of a deep ocean. What we experience as space and time are the product of quantum processes operating at a deeper, microscopic level – processes that don’t make much sense to us as creatures rooted in the macroscopic world.

In the Planck epoch, our ordinary understanding of space and time breaks down, so we can’t any longer rely on our ordinary understanding of cause and effect either. Despite this, all candidate theories of quantum gravity describe something physical that was going on in the Planck epoch – some quantum precursor of ordinary space and time. But where did that come from?

Even if causality no longer applies in any ordinary fashion, it might still be possible to explain one component of the Planck-epoch universe in terms of another. Unfortunately, by now even our best physics fails completely to provide answers. Until we make further progress towards a “theory of everything”, we won’t be able to give any definitive answer. The most we can say with confidence at this stage is that physics has so far found no confirmed instances of something arising from nothing.

To truly answer the question of how something could arise from nothing, we would need to explain the quantum state of the entire universe at the beginning of the Planck epoch. All attempts to do this remain highly speculative. Some of them appeal to supernatural forces like a designer. But other candidate explanations remain within the realm of physics – such as a multiverse, which contains an infinite number of parallel universes, or cyclical models of the universe, being born and reborn again.

The 2020 Nobel Prize-winning physicist Roger Penrose has proposed one intriguing but controversial model for a cyclical universe dubbed “conformal cyclic cosmology”. Penrose was inspired by an interesting mathematical connection between a very hot, dense, small state of the universe – as it was at the Big Bang – and an extremely cold, empty, expanded state of the universe – as it will be in the far future. His radical theory to explain this correspondence is that those states become mathematically identical when taken to their limits. Paradoxical though it might seem, a total absence of matter might have managed to give rise to all the matter we see around us in our universe.

In this view, the Big Bang arises from an almost nothing. That’s what’s left over when all the matter in a universe has been consumed into black holes, which have in turn boiled away into photons – lost in a void. The whole universe thus arises from something that – viewed from another physical perspective – is as close as one can get to nothing at all. But that nothing is still a kind of something. It is still a physical universe, however empty.

How can the very same state be a cold, empty universe from one perspective and a hot dense universe from another? The answer lies in a complex mathematical procedure called “conformal rescaling”, a geometrical transformation which in effect alters the size of an object but leaves its shape unchanged.

Penrose showed how the cold dense state and the hot dense state could be related by such rescaling so that they match with respect to the shapes of their spacetimes – although not to their sizes. It is, admittedly, difficult to grasp how two objects can be identical in this way when they have different sizes – but Penrose argues size as a concept ceases to make sense in such extreme physical environments.

In conformal cyclic cosmology, the direction of explanation goes from old and cold to young and hot: the hot dense state exists because of the cold empty state. But this “because” is not the familiar one – of a cause followed in time by its effect. It is not only size that ceases to be relevant in these extreme states: time does too. The cold dense state and the hot dense state are in effect located on different timelines. The cold empty state would continue on forever from the perspective of an observer in its own temporal geometry, but the hot dense state it gives rise to effectively inhabits a new timeline all its own.

It may help to understand the hot dense state as produced from the cold empty state in some non-causal way. Perhaps we should say that the hot dense state emerges from, or is grounded in, or realised by the cold, empty state. These are distinctively metaphysical ideas which have been explored by philosophers of science extensively, especially in the context of quantum gravity where ordinary cause and effect seem to break down. At the limits of our knowledge, physics and philosophy become hard to disentangle.

Conformal cyclic cosmology offers some detailed, albeit speculative, answers to the question of where our Big Bang came from. But even if Penrose’s vision is vindicated by the future progress of cosmology, we might think that we still wouldn’t have answered a deeper philosophical question – a question about where physical reality itself came from. How did the whole system of cycles come about? Then we finally end up with the pure question of why there is something rather than nothing – one of the biggest questions of metaphysics.

But our focus here is on explanations which remain within the realm of physics. There are three broad options to the deeper question of how the cycles began. It could have no physical explanation at all. Or there could be endlessly repeating cycles, each a universe in its own right, with the initial quantum state of each universe explained by some feature of the universe before. Or there could be one single cycle, and one single repeating universe, with the beginning of that cycle explained by some feature of its own end. The latter two approaches avoid the need for any uncaused events – and this gives them a distinctive appeal. Nothing would be left unexplained by physics.

Penrose envisages a sequence of endless new cycles for reasons partly linked to his own preferred interpretation of quantum theory. In quantum mechanics, a physical system exists in a superposition of many different states at the same time, and only “picks one” randomly, when we measure it. For Penrose, each cycle involves random quantum events turning out a different way – meaning each cycle will differ from those before and after it. This is actually good news for experimental physicists, because it might allow us to glimpse the old universe that gave rise to ours through faint traces, or anomalies, in the leftover radiation from the Big Bang seen by the Planck satellite.

Penrose and his collaborators believe they may have spotted these traces already, attributing patterns in the Planck data to radiation from supermassive black holes in the previous universe. However, their claimed observations have been challenged by other physicists and the jury remains out.

Endless new cycles are key to Penrose’s own vision. But there is a natural way to convert conformal cyclic cosmology from a multi-cycle to a one-cycle form. Then physical reality consists in a single cycling around through the Big Bang to a maximally empty state in the far future – and then around again to the very same Big Bang, giving rise to the very same universe all over again.

This latter possibility is consistent with another interpretation of quantum mechanics, dubbed the many-worlds interpretation. The many-worlds interpretation tells us that each time we measure a system that is in superposition, this measurement doesn’t randomly select a state. Instead, the measurement result we see is just one possibility – the one that plays out in our own universe. The other measurement results all play out in other universes in a multiverse, effectively cut off from our own. So no matter how small the chance of something occurring, if it has a non-zero chance then it occurs in some quantum parallel world. There are people just like you out there in other worlds who have won the lottery, or have been swept up into the clouds by a freak typhoon, or have spontaneously ignited, or have done all three simultaneously.

Some people believe such parallel universes may also be observable in cosmological data, as imprints caused by another universe colliding with ours.

Many-worlds quantum theory gives a new twist on conformal cyclic cosmology, though not one that Penrose agrees with. Our Big Bang might be the rebirth of one single quantum multiverse, containing infinitely many different universes all occurring together. Everything possible happens – then it happens again and again and again.

For a philosopher of science, Penrose’s vision is fascinating. It opens up new possibilities for explaining the Big Bang, taking our explanations beyond ordinary cause and effect. It is therefore a great test case for exploring the different ways physics can explain our world. It deserves more attention from philosophers.

For a lover of myth, Penrose’s vision is beautiful. In Penrose’s preferred multi-cycle form, it promises endless new worlds born from the ashes of their ancestors. In its one-cycle form, it is a striking modern re-invocation of the ancient idea of the ouroboros, or world-serpent. In Norse mythology, the serpent Jörmungandr is a child of Loki, a clever trickster, and the giant Angrboda. Jörmungandr consumes its own tail, and the circle created sustains the balance of the world. But the ouroboros myth has been documented all over the world – including as far back as ancient Egypt.

The ouroboros of the one cyclic universe is majestic indeed. It contains within its belly our own universe, as well as every one of the weird and wonderful alternative possible universes allowed by quantum physics – and at the point where its head meets its tail, it is completely empty yet also coursing with energy at temperatures of a hundred thousand million billion trillion degrees Celsius. Even Loki, the shapeshifter, would be impressed.
Cliff note version?

;-)
 

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