Our Universe Is not fine-tuned for life, but it’s still kind of OK

RZetopan

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Sure, but by this definition it's not possible for there to be a universe well suited to life.
Wow! Look at the possibility that non-human and even non-Earth life could exist and live in the vacuum of space between the stars. Life on Earth is the only sample we currently have, but that does not automatically mean that it is the only life possible. If we detect life on another body in our solar system, that would add a second data point that could be drastically different from life on Earth.
 
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RZetopan

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I've argued with many believers over this. Almost without exception, they claim the term doesn't mean physical image. To counteract a belief claim using logic, you have to address the actual belief, not the metaphor.
As knowledge advances, the religion literals turn into metaphors to avoid the embarrassment of their primitive beliefs.
 
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The "Robert H. Dickle" mentioned at the start of the article is no doubt Robert H Dicke (often misspelled Dickie), who was, as Wikipedia notes, an "American astronomer and physicist who made important contributions to the fields of astrophysics, atomic physics, cosmology and gravity."

Perhaps most notably, he predicted (and sought to measure) the cosmic microwave background (CMB) before Penzias and Wilson accidently stumbled upon it. Indeed, Dicke was the physicist Penzias called, when he and Wilson were trying to make sense of their observations; sadly, Dicke did not share in the Nobel prize for this discovery.
 
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RZetopan

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I don't know why you would say that is "clear."
Gen 1:26: And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
Also note the plural "Let us make man in our image" that believers like to wave away.
 
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RZetopan

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According to the New Testament, God must be genetically similar enough to humans that he was able to get a Jewish teenager pregnant so that she could give birth to Himself.
So you haven't heard the joke: What does the "H" in "Jesus H. Christ" stand for? Obviously, it stands for Haploid. Of course, this can also be easily explained that Mary's "X" was magically changed into a "Y".
 
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RZetopan

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The (mainstream) Catholic Church has actually been trying pretty hard for a while now to reconcile its faith with actual science and its general position is to accept science and interpret the bible to fit science. So it doesn't really require what you are stating and allows for a metaphorical reading of Genesis.
While the Catholic Church claims that they are compatible with science, they still peddle belief in demons (demonic positions) and a literal Adam and Eve, which they move back to 40,000 YBP. Without a literal Adam and Eve, there could be no fall, and there goes the original sin that allows for punishing children for "crimes" their parents allegedly committed. Of course, religionists are free to believe whatever they want, but that does not absolve them from any skepticism about their claims. Also note that according to Pew, 61% of White Catholics, along with 82% of White evangelical Protestants and 58% of White nonevangelical Protestants voted for an adjudicated rapist, 34 count felon and career criminal for the presidential election this year, with many of them insisting that he is the second coming of Jesus. So much for "metaphorical" interpretations and religious morals.
 
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[Note: I'm not defending any of this, just posting for accuracy]

It's not really that simple. The (mainstream) Catholic Church has actually been trying pretty hard for a while now to reconcile its faith with actual science and its general position is to accept science and interpret the bible to fit science. So it doesn't really require what you are stating and allows for a metaphorical reading of Genesis. (See, e.g., https://catholicreview.org/catholic-church-has-evolving-answer-on-reality-of-adam-and-eve/) And there have actually been some pretty significant contributions to mainstream cosmology made by Catholic priests like Georges Lemaître.

But that said, the actual situation is a mess with various Catholic factions all over the place on the subject. So it wouldn't surprise me at all if you were to come across a faction or specific Catholic church which insists on the literal interpretation. This all gets back to the serious sectarian problem presented by the Bible that several posters above have mentioned. In what has to be one of the most colossal ironies in literature the Bible specifically states "For God is not a God of confusion but of peace" (1 Corinthians 14:33) but has lead to the deaths on tens of millions and untold suffering over the centauries resulting from wars between various Christian sects who, apparently confused by the God of the bible, interpreted (and continue to, one of my neighbors is some sort of evangelical and doesn't consider Catholics Christians) the bible differently.

[Just anecdotally... Although atheist even as a kid, I attended a Catholic elementary/middle school and we were taught standard old-Earth evolution and cosmology in science class.]
The insistence of a literal Adam and Eve as progenitors of all subsequent living humans was clearly stated in the the encyclical Humani Generis by Pope Pius XII. So if you want to argue Catholic doctrine, argue with him, not us. Or else get them to admit that a pope, and the Holy Roman Catholic Church, made a mistake.

When, however, there is question of another conjectural opinion, namely polygenism, the children of the Church by no means enjoy such liberty. For the faithful cannot embrace that opinion which maintains that either after Adam there existed on this earth true men who did not take their origin through natural generation from him as from the first parent of all, or that Adam represents a certain number of first parents. Now it is in no way apparent how such an opinion can be reconciled with that which the sources of revealed truth and the documents of the Teaching Authority of the Church propose with regard to original sin, which proceeds from a sin actually committed by an individual Adam and which, through generation, is passed on to all and is in everyone as his own.[12]
 
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While the Catholic Church claims that they are compatible with science, they still peddle belief in demons (demonic positions) and a literal Adam and Eve, which they move back to 40,000 YBP. Without a literal Adam and Eve, there could be no fall, and there goes the original sin that allows for punishing children for "crimes" their parents allegedly committed. Of course, religionists are free to believe whatever they want, but that does not absolve them from any skepticism about their claims. Also note that according to Pew, 61% of White Catholics, along with 82% of White evangelical Protestants and 58% of White nonevangelical Protestants voted for an adjudicated rapist, 34 count felon and career criminal for the presidential election this year, with many of them insisting that he is the second coming of Jesus. So much for "metaphorical" interpretations and religious morals.
What you say about the Catholic Church and a literal Adam is true; I have a link to the relevant papal encyclical in another comment. The issue is over polygenism.

Any competent population biologist will tell you that the population of humans was never bottlenecked down to two individuals. FFS, we share certain blood types with chimpanzees and other apes. We have the DNA, we win.
 
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So you haven't heard the joke: What does the "H" in "Jesus H. Christ" stand for? Obviously, it stands for Haploid. Of course, this can also be easily explained that Mary's "X" was magically changed into a "Y".
And of course, consideration of those answers would reveal that neither establishes a father-son relationship between the Creator of the Universe and Jesus H. Christ.
 
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llanitedave

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While the Catholic Church claims that they are compatible with science, they still peddle belief in demons (demonic positions) and a literal Adam and Eve, which they move back to 40,000 YBP. Without a literal Adam and Eve, there could be no fall, and there goes the original sin that allows for punishing children for "crimes" their parents allegedly committed. Of course, religionists are free to believe whatever they want, but that does not absolve them from any skepticism about their claims. Also note that according to Pew, 61% of White Catholics, along with 82% of White evangelical Protestants and 58% of White nonevangelical Protestants voted for an adjudicated rapist, 34 count felon and career criminal for the presidential election this year, with many of them insisting that he is the second coming of Jesus. So much for "metaphorical" interpretations and religious morals.
Yes, the whole house of cards that is Christianity hinges on the concepts of "The Fall" and its resulting "Original Sin". Without that buttress there is no Christianity. However the religion might evolve to accommodate Deep Time and Evolution, Original Sin can't be set aside. Without that, there is no need for Universal Salvation, and no need for a spiritual Savior.
Yet there is no place to put The Fall within a scientific cosmology. Maybe the Inflation event? It's all special pleading.
This explains why, although there will always be a few Christians who can accept science and somehow compartmentalize away the inherent contradictions, the religion as a whole must and always will be fundamentally hostile to science, as a scientific cosmology fundamentally contradicts the very defining foundation of Christianity.
 
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Quisquis

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Wow! Look at the possibility that non-human and even non-Earth life could exist and live in the vacuum of space between the stars. Life on Earth is the only sample we currently have, but that does not automatically mean that it is the only life possible. If we detect life on another body in our solar system, that would add a second data point that could be drastically different from life on Earth.
The paper presumes life needs stars, and I didn't even include those in my scenario... I was just trying to get us to a land area that could pass dude's test, which is also a requirement the paper presumes (land/water with gravity).

ie, it's the paper's lack of imagination you have an issue with, not mine.
 
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llanitedave

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The plural implies the Godhead three-in-one, ie the Trinity - Father/Son/Holy Spirit. Personally, I haven't really witnessed any believers trying to wave that one away.
1. The concept of The Trinity postdates by centuries the plural found in Genesis.
2. Unitarians are a thing. Their number has included a few famous personages, including Isaac Newton, Linus Pauling, and William Howard Taft, to throw up some random names.
 
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Wheels Of Confusion

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The plural implies the Godhead three-in-one, ie the Trinity - Father/Son/Holy Spirit. Personally, I haven't really witnessed any believers trying to wave that one away.
No, it refers to the original polytheistic religious structure of the regions that became the two kingdoms. Thus also the multiple names for the chief god. The evolution to monolatry and then into monotheism probably didn't take place until well into the Babylonian captivity. (Aside, did you ever wonder about the Samaritans who are mentioned in the Bible, especially by Jesus who used a parable of one as an example of neighborly conduct? They split off from Judaism proper sometime after this point.)

Not only does the Trinity not apply, it doesn't even apply in most of the Gospels. The Gospel attributed to John, probably the latest to have been written, is the one that starts to really try and drive a Trinitarian view into the Christian mainstream. And the explicit reference to a Trinity was almost certainly a later addition, not found in the earliest version of the book.
 
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No, it refers to the original polytheistic religious structure of the regions that became the two kingdoms. Thus also the multiple names for the chief god. The evolution to monolatry and then into monotheism probably didn't take place until well into the Babylonian captivity. (Aside, did you ever wonder about the Samaritans who are mentioned in the Bible, especially by Jesus who used a parable of one as an example of neighborly conduct? They split off from Judaism proper sometime after this point.)

Not only does the Trinity not apply, it doesn't even apply in most of the Gospels. The Gospel attributed to John, probably the latest to have been written, is the one that starts to really try and drive a Trinitarian view into the Christian mainstream. And the explicit reference to a Trinity was almost certainly a later addition, not found in the earliest version of the book.
Everyone’s Favorite Gospel Is a Forgery
 
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Hmnhntr

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The direction of your disapproval is interesting, considering that the whole concept was started by believers trying to use logic to prove the existence of God.
Scholasticism

My favorite logical conundrum for Christians: Could God create a rock so heavy that Him hitting Himself in the head with it would explain the change in personality He underwent between the Old and New Testaments?
Huh, that's news to me. I'll have to read that whole article!

As for the latter question, clearly His Son took over the operation when He realized His Dad was a bit soft in the head. Or He chilled out after having a kid; it happens for humans, after all.
 
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Hmnhntr

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I've argued with many believers over this. Almost without exception, they claim the term doesn't mean physical image. To counteract a belief claim using logic, you have to address the actual belief, not the metaphor.
Yet they also claim that God somehow has none of the manifold and defining flaws humans have, including the ones he demonstrates in their own holy book.
 
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Hmnhntr

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Wait, I thought people knew this. It diverges substantially from the other two gospels, often in ways clearly intended to bend the truth towards religiously significant symbolism (when did Jesus die?). John is the least reliable gospel by far; is it really a favored one?
"John 3:16" is the verse they show at sportsball matches and everywhere.
 
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Hmnhntr

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The title is very misleading. The fine-tuning argument used by scientists was never that we are the best possible universe, only that very few universes support life, and we are in one of them. As the article says: "he chances of having a cosmological constant at or lower than the value present in our Universe is just 0.5 percent" - that is pretty fine tuned.

And the cosmological constant is only one of many seemingly arbitrary constants. Many of which would make life impossible, if they had been different. For example if the Strong Nuclear Force had been slightly weaker, there would be no protons. And note that there is no obviously mechanism that these constants should be in a range that supports life, except for fine tuning arguments like a multiverse where all combinations exist, combined with anthropic selection.

The likelihood of our universe being fine-tunes is the product of all those arbitrary constants. So if only 1% of possible universes have a cosmological constant suited for life, and only 1% of universes have a Strong Nuclear Force suited for life, we are already down to our universe being 1/10000. And there are apparently many more such seemingly tuned constants.
The thing is, that assumes that those constants can just have any arbitrary value. When it seems likely that there are underlying principles that define them.

And frankly, 0.5% isn't that unlikely. I rolled the same number on a d100 three times in a row last week. That's a 1/1000000, or 0.0001% chance. Are religious people going to insist God must have controlled my dice for that to happen?
 
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This has been a nightmare scenario that I developed some years ago. Maybe this mediocre universe was put here just for us, and this one planet is the only place where there's really life. The last-minute school project is one explanation that fits.
The ultimate, checking off the boxes on the assignment so I can say I did the work feeling.
 
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It is an anthropic multiverse update, but like earlier works they are still 2-3 orders of magnitude away and note that their model isn't fully conclusive, they need better models. They concern themselves with strict but arguable hypothesis testing, but the theory is good enough compared to the alternatives (such as unlikely finetuning). The arguable limit here could be 5 sigma for tension, as we see used in Hubble rate estimates.

The original paper noted that dark energy has a high prior as it should be around Planck energy, but that the habitability requirement push it down 120 orders of magnitude and not much more. This is against a theoretical background of an infinite number of lower orders of energy scale, as the article alludes to.


This is a pop science claim, but there are instances where it can be useful. Life-and-death processes such as Poisson processes are one example that fits here, a single sample gives, admittedly risky, estimates of mean and variance.
the entire concept of an anthropomorphic universe is unscientific.
 
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So I'm not going to get in an argument about this because I don't really care but many of you are misunderstanding the current mainstream Catholic take on Adam and Eve (and as I mentioned above, there are numerous Catholic factions ranging from very conservative to very liberal/"hippy"). And that's that evolution of physical bodies is fine but that Adam and Eve were the first "people" (and there may have been more than two of them) to have souls, not the first people. And that those first people with souls did "fall". I'm not saying that this makes sense, but that is the position. And that is what I was taught in my religion classes in Catholic school by, in 7th and 8th grade, a monsignor and before that by priests. Most of the other classes were taught by nuns, including science classes, and in those science classes we were taught from secular text books which included evolution and the Earth being several billion years old. I'm not defending any of this, I didn't like the school and as a non-Catholic/non-Christian was not treated very well, but what some posters above are saying is generally not the mainstream view of this stuff.

edit: stupid autocorrect.
 
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So I'm not going to get in an argument about this because I don't really care but many of you are misunderstanding the current mainstream Catholic take on Adam and Eve (and as I mentioned above, there are numerous Catholic factions ranging from very conservative to very liberal/"hippy"). And that's that evolution of physical bodies is fine but that Adam and Eve were the first "people" (and there may have been more than two of them) to have soles, not the first people. And that those first people with soles did "fall". I'm not saying that this makes sense, but that is the position. And that is what I was taught in my religion classes in Catholic school by, in 7th and 8th grade, a monsignor and before that by priests. Most of the other classes were taught by nuns, including science classes, and in those science classes we were taught from secular text books which included evolution and the Earth being several billion years old. I'm not defending any of this, I didn't like the school and as a non-Catholic/non-Christian was not treated very well, but what some posters above are saying is generally not the mainstream view of this stuff.
NO, you're not going to argue about this with us. Because we don't set the doctrine of the Holy Roman Catholic Church, and neither do you.

Pope Pius XII already weighed in on this topic (link already provided). And according to the Holy Roman Catholic Church, the person who does set Catholic doctrine is the pope. So go read that encyclical, and then read up on the doctrine of the Holy Roman Catholic Church concerning papal infallibility.

And do it elsewhere, because I don't have time to listen to you whine about how you are overruling the pope.
 
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NO, you're not going to argue about this with us. Because we don't set the doctrine of the Holy Roman Catholic Church, and neither do you.

Pope Pius XII already weighed in on this topic (link already provided). And according to the Holy Roman Catholic Church, the person who does set Catholic doctrine is the pope. So go read that encyclical, and then read up on the doctrine of the Holy Roman Catholic Church concerning papal infallibility.

And do it elsewhere, because I don't have time to listen to you whine about how you are overruling the pope.

Whatever. But maybe consider this piece of wisdom from a "Working at [major lab]" HR course we all had to take... "Before you can solve a problem you first have to identify the problem." I'll go with what 8 years of Catholic school, collaboration with some some physics professors at a Catholic university and a good friend of mine who has been a Catholic missionary to Haiti tell me over what some apparently pretty angry internet atheists insist must be the case.
 
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Digital_Dreamer

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Basically, 'Omnipotent God inexplicably settles for 'meh that'll do''
Which leads to the terrifying prospect that we were some high school level project that got turned in at the last minute by a teenage equivalent deity that was fine with pulling C's.
God discovered the SimCity "disasters" menu and is blowing off steam?
There's actually a very logical explanation for all the things that we have observed, but very few people are willing to dig down to find that answer. And, unfortunately, religions have done a disservice to billions of people and made a mockery of all of this, so it's no wonder few take it seriously. I certainly wouldn't have given it a second thought, if it wasn't for someone showing me the answers to these basic questions about life, where we come from, and why we are here.

Just a final point: Even the Bible notes that in the very near future, religions will be destroyed, and deservedly so, because they are responsible for misleading so many.
 
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The title is very misleading. The fine-tuning argument used by scientists was never that we are the best possible universe, only that very few universes support life, and we are in one of them. As the article says: "he chances of having a cosmological constant at or lower than the value present in our Universe is just 0.5 percent" - that is pretty fine tuned.

And the cosmological constant is only one of many seemingly arbitrary constants. Many of which would make life impossible, if they had been different. For example if the Strong Nuclear Force had been slightly weaker, there would be no protons. And note that there is no obviously mechanism that these constants should be in a range that supports life, except for fine tuning arguments like a multiverse where all combinations exist, combined with anthropic selection.

The likelihood of our universe being fine-tunes is the product of all those arbitrary constants. So if only 1% of possible universes have a cosmological constant suited for life, and only 1% of universes have a Strong Nuclear Force suited for life, we are already down to our universe being 1/10000. And there are apparently many more such seemingly tuned constants.
The 0.5 percent from the study is about disproving the anthropic principal. They could only really calculate that at all because if the constant gets too low or too high you get no stars so you can calculate a denominator for your probability. What it really says is if universes exist with all values of the cosmological constant 0.5 percent of the stars in the multiverse will be in universes with cosmological constants at or less than the observed value in our Universe. So it's still unlikely that we'd see the actual value based on an anthropic argument.

See, the real problem with the fine tuning argument is that the entire thing rests on probability. But we have no idea what constrains the possible values of the cosmological constant. We don't know why it is what we observe it to be. The argument compares a finite range required for life to imagined infinite possible values of the cosmological constant. And that doesn't work, because you can't actually do probability with infinite possibility space.

Look at it this way, if the range of all the constants consistent with life were 10100 times larger that it actually is it would make zero difference with regards to the fine tuning argument. You're still dividing a finite range by infinite possibilities and while you can't actually do that in any rigorous way, it kind of feels like it's 0 right.

The entire argument is just handwaving in front of human hunches about probability.
 
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Shavano

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"So far, we know of only one such planet, and you can’t infer any statistical probabilities when you only have one sample."

I don't think that is true. That fact there is one planet with life makes it more likely there are others. The idea that the unimaginably large universe created exactly one planet with life seems vanishingly small.
That's where the weak anthropic principle comes in. That's not valid reasoning because if there were only one unique life bearing planet in a whole hypothetically infinite universe, they might make the same argument, and they'd be wrong. We only know that there is one planet in the universe on which life evolved. The rest might or might not have life until we have more evidence than we have now. We haven't even established what the bare minimum conditions are to support life, nor do we know that planets very much like Earth are the most likely to have life on them. We don't know if there is other non-terrestrial life in the solar system. But given how early life got established here and under what conditions, we know that it's possible over at least the range of conditions that encompasses the early Earth and conditions today. But given those conditions we don't know if the chance that results in life is 100%, or 1 in 1000 or 1 in a 100 trillion. It could be any of those and that would be consistent with what we know now.
Considering that there are over 45,000 different Christian sects alone that disagree on which of their churches is "the one true church", their anthropomorphic deity could have zero or an infinite number of heads depending on the specific sect.
I'll accept that if you can demonstrate the existence of even one of those 45,000 different Christian sects that has made an assertion that God has more than one, two, or three heads. ;)
I saw a documentary with Vin Diesel where they called it the "Underverse".
Home of Captain Underpants? Or a specialty clothing store? Or both?
It's like trying to argue which is correct, ranch dressing or iambic pentameter (only even more fruitless).
I object to your sly intimation that ranch dressing is not appropriate for fruit salad.
Yes, the whole house of cards that is Christianity hinges on the concepts of "The Fall" and its resulting "Original Sin". Without that buttress there is no Christianity. However the religion might evolve to accommodate Deep Time and Evolution, Original Sin can't be set aside. Without that, there is no need for Universal Salvation, and no need for a spiritual Savior.
Yet there is no place to put The Fall within a scientific cosmology. Maybe the Inflation event? It's all special pleading.
This explains why, although there will always be a few Christians who can accept science and somehow compartmentalize away the inherent contradictions, the religion as a whole must and always will be fundamentally hostile to science, as a scientific cosmology fundamentally contradicts the very defining foundation of Christianity.
Ah a serious question. No, you can have original sin without the fall because original sin as a doctrine doesn't logically rely on a prior fallen state. Rather the whole Genesis myth can be taken as a metaphor for the inherent conflict between individual imperfect humans that have free will and God. If they have free will, they inevitably will come in conflict with any other will, including God's, whether God is held to be perfect or not. Freedom implies difference. That we are imperfect and prone to error and to harmful actions isn't honestly in dispute by anyone, whether or not they're religious. The insidious and inhumane claim of Christians is that humans are therefore worthy of condemnation rather than understanding and acceptance, and that a just God could do so and punish us for the very nature that makes us worthy of its consideration at all; IOW when the conflict that they call "sin" is an inevitable consequence of our individual existence. Their notion of salvation is likewise inhumane, because in being perfectly conformed to anything, even the perfect, our individual nature would be extinguished.
 
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The Lurker Beneath

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NO, you're not going to argue about this with us. Because we don't set the doctrine of the Holy Roman Catholic Church, and neither do you.

Pope Pius XII already weighed in on this topic (link already provided). And according to the Holy Roman Catholic Church, the person who does set Catholic doctrine is the pope. So go read that encyclical, and then read up on the doctrine of the Holy Roman Catholic Church concerning papal infallibility.

And do it elsewhere, because I don't have time to listen to you whine about how you are overruling the pope.

FYI, the extent of formal infallibility of doctrinal statements by the Pope is a slightly contentious issue in Catholic philosophy, but it certainly does not include all Papal opinions, and many contend that it includes only a small subset.
 
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C64 raids Bungling Bay

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This is an assumption and I'm not sure this is valid. For example, it would depend on how those stars got started. The initial universe was filled with hydrogen and there's growing evidence that initial stars were much larger than we originally thought - so a universe filled with lots of big, gassy stars would NOT be a good environment for life to start. It would also deplete a lot of the hydrogen making it harder to form second gen stars which are more likely to harbour livable planets.

In the end, the best argument is the simplest: the Fermi paradox - if life is easy to make, where are the aliens? The utter lack of signals suggests life is actually hard to get started in this universe (or at least, life that reaches the level of technology) which right there implies this universe isn't terribly life-friendly.
c

The aliens are far far away. The speed of light is a terrible tyrant. The universe is do big, that other intelligent life doesn't even matter. Even if humanity survives the death of the earth, it's unlikely we ever make contact with an alien lifeform. At best, some of our long lived robotic probes might find life after thousands of years, and send a radio signal report back to our long dead planet.
 
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