"The only wealth which you will keep forever is the wealth you have given away."
Marcus Aurelius Meditations. 167 AD
Marcus Aurelius Meditations. 167 AD
the bible,truth,God's kingdom,Jehovah God,New World,Jehovah's Witnesses,God's church,Christianity,apologetics,spirituality.
“If you take seriously the theory of all possible universes, including all possible variations,” Davies said, “at least some of them must have intelligent civilizations with enough computing power to simulate entire fake worlds. Simulated universes are much cheaper to make than the real thing, and so the number of fake universes would proliferate and vastly outnumber the real ones. And assuming we’re just typical observers, then we’re overwhelmingly likely to find ourselves in a fake universe, not a real one.”So far it’s the normal argument.Then Davies makes his move. He claims that because the theoretical existence of multiple universes is based on the laws of physics in our universe, if this universe is simulated, then its laws of physics are also simulated, which would mean that this universe’s physics is a fake. Therefore, Davies reasoned, “We cannot use the argument that the physics in our universe leads to multiple universes, because it also leads to a fake universe with fake physics.” That undermines the whole argument that fundamental physics generates multiple universes, because the reasoning collapses in circularity.Davies concluded, “While multiple universes seem almost inevitable given our understanding of the Big Bang, using them to explain all existence is a dangerous, slippery slope, leading to apparently absurd conclusions.”
Horgan: You were one of the originators of inflation theory. When and why did you start having doubts about it?Steinhardt: From the very beginning, even as I was writing my first paper on inflation in 1982, I was concerned that the inflationary picture only works if you finely tune the constants that control the inflationary period. Andy Albrecht and I (and, independently, Andrei Linde) had just discovered the way of having an extended period of inflation end in a graceful exit to a universe filled with hot matter and radiation, the paradigm for all inflationary models since. But the exit came at a cost — fine-tuning. The whole point of inflation was to get rid of fine-tuning – to explain features of the original big bang model that must be fine-tuned to match observations. The fact that we had to introduce one fine-tuning to remove another was worrisome. This problem has never been resolved.But my concerns really grew when I discovered that, due to quantum fluctuation effects, inflation is generically eternal and (as others soon emphasized) this would lead to a multiverse…To me, the accidental universe idea is scientifically meaningless because it explains nothing and predicts nothing. Also, it misses the most salient fact we have learned about large-scale structure of the universe: its extraordinary simplicity when averaged over large scales…Scientific ideas should be simple, explanatory, predictive. The inflationary multiverse as currently understood appears to have none of those properties.These concerns and more, and the fact that we have made no progress in 30 years in addressing them, are what have made me skeptical about the inflationary picture.
“In a single universe, cows born with two heads are rarer than cows born with one head,” he said. But in an infinitely branching multiverse, “there are an infinite number of one-headed cows and an infinite number of two-headed cows. What happens to the ratio?”
“The connections in brains aren’t random; they are deeply organized to serve specific purposes,” Dennett says. “And human brains share further architectural features that distinguish them from, say, chimp brains, in spite of many deep similarities. What are the odds that a network, designed by processes serving entirely different purposes, would share enough of the architectural features to serve as any sort of conscious mind?” (Emphasis mine – VJT.)
[0:40]
It’s not an unreasonable speculation. However, it falls far short of being a complete theory of existence, which it’s often presented as. That is, if there’s a multiverse, we can forget about all the mysteries of the universe because it’s all explained: everything’s out there somewhere. End of story. Well, it’s simply not true, because to get a multiverse, you need a universe-generating mechanism – something has got to make all those Big Bangs go “Bang!” – so you’re going to need some laws of physics to do that. All of the theories of the multiverse assume quantum mechanics, quantum physics, to give the element of spontaneity to make the bangs happen. They assume pre-existing space and time, they assume the normal notion of causality – a whole host of things. You write down a list, there’s about ten different basic assumptions they have to make to get the theory to work. And you can say, well, “Where did they all come from? What about these meta-laws that generate universes and impose effective local by-laws, as Martin Rees would call it, upon these universes? What is this distribution mechanism? How does that work? Where do those rules come from? So all you’ve done is shift the problem of existence up from the level of universe to the level of multiverse. But you haven’t explained it.
[3:00]
I suppose for me, the main problem is that what we’re trying to do is explain why the universe is as it is by appealing to something outside of it – in this case, an infinite number of universes outside of it – that, to me, is no better than traditional religion, that appeals to an unseen, unexplained God that is outside of the universe.[5:01]
I would like to try to find an explanation for the universe from entirely within it, without appealing to anything external. And as a matter of fact I believe that if somebody did a proper mathematical analysis, they would find that the complexity of the explanation of the multiverse – an infinite number of universes we don’t see – is the same as the explanation of traditional theology: an infinitely complex God outside the universe that we don’t see. They’re really the same thing, in different language, and so my point of view now is: a plague on both your houses. We need to try to find the explanation for the universe from within it, from what we see, and not multiply these unseen entities.
The multiverse hypothesis faces five formidable problems: first, it merely shifts the fine-tuning problem up one level, as a multiverse capable of generating even one life-supporting universe would still need to be fine-tuned; second, the multiverse hypothesis itself implies that a sizable proportion of universes (including perhaps our own) were intelligently designed; third, the multiverse hypothesis predicts that most of the intelligent life-forms that exist should be “Boltzmann brains” that momentarily fluctuate into and out of existence; fourth, the multiverse hypothesis predicts that a universe containing intelligent life should be much smaller than the one we live in; and fifth, the multiverse hypothesis cannot account for the fact that the laws of physics are not only life-permitting, but also mathematically elegant – a fact acknowledged even by physicists with no religious beliefs.
A common reaction among physicists to remarkable discoveries of the sort discussed above is a mixture of delight at the subtlety and elegance of nature, and of stupefaction: ‘I would never have thought of doing it that way.’ If nature is so ‘clever’ that it can exploit mechanisms that amaze us with their ingenuity, is that not persuasive evidence for the existence of intelligent design behind the physical universe? (1984, pp. 235-36. Emphasis mine – VJT.)
It seems to me there is no hope of ever explaining why the physical universe is as it is so long as we are fixated on immutable laws or meta-laws that exist reasonlessly or are imposed by divine providence. The alternative is to regard the laws of physics and the universe they govern as part and parcel of a unitary system, and to be incorporated together within a common explanatory scheme.In other words, the laws should have an explanation from within the universe and not involve appealing to an external agency. The specifics of that explanation are a matter for future research. But until science comes up with a testable theory of the laws of the universe, its claim to be free of faith is manifestly bogus.
Our surroundings contain large amounts of strongly fragmented and damaged DNA, which is being degraded. Some of it may be thousands of years old. Laboratory experiments with microbes and various kinds of DNA have shown that bacteria take up very short and damaged DNA from the environment and passively integrate it in their own genome. Furthermore this mechanism has also been shown to work with a modern bacteria's uptake of 43,000 years old mammoth DNA.
Muller and his colleagues scanned the genomes of 149 eukaryotes, and found acdS-like genes in 65 of them -- 61 in fungi and 4 in parasitic microorganisms called oomycetes, includingPhytophthora infestans, the microbe responsible for the Irish potato famine. After analysing the organisms' genetic family trees, the researchers determined that the most likely explanation was that three different kinds of bacterium had donated the gene to the fungi and oomycetes in a total of 15 different horizontal-gene-transfer events.
"We're actually seeing more and more incidence of horizontal gene transfer in plants"... However neochrome was transferred, it seems to have occurred at just the right moment in ferns' evolutionary history.
"This paper confirms that one of several algal genes needed to repair damage to chloroplasts, and keep them functioning, is present on the slug chromosome," Pierce says. "The gene is incorporated into the slug chromosome and transmitted to the next generation of slugs." While the next generation must take up chloroplasts anew from algae, the genes to maintain the chloroplasts are already present in the slug genome, Pierce says."There is no way on earth that genes from an alga should work inside an animal cell," Pierce says. "And yet here, they do. They allow the animal to rely on sunshine for its nutrition. So if something happens to their food source, they have a way of not starving to death until they find more algae to eat."
Lead author Alastair Crisp from the University of Cambridge, UK, said: "This is the first study to show how widely horizontal gene transfer (HGT) occurs in animals, including humans, giving rise to tens or hundreds of active 'foreign' genes. Surprisingly, far from being a rare occurrence, it appears that HGT has contributed to the evolution of many, perhaps all, animals and that the process is ongoing, meaning that we may need to re-evaluate how we think about evolution."
Alastair Crisp and Chiara Boschetti of Cambridge University, and their colleagues, have been investigating the matter. Their results, just published in Genome Biology, suggest human beings have at least 145 genes picked up from other species by their forebears. Admittedly, that is less than 1 percent of the 20,000 or so humans have in total. But it might surprise many people that they are even to a small degree part bacterium, part fungus and part alga.Dr Crisp and Dr Boschetti came to this conclusion by looking at the ever-growing public databases of genetic information now available. They did not study humans alone. They looked at nine other primate species, and also 12 types of fruit fly and four nematode worms. Flies and worms are among geneticists' favourite animals, so lots of data have been collected on them. The results from all three groups suggest natural transgenics is ubiquitous.
The fact that horizontal gene transfer happens among eukaryotes does not require a complete overhaul of standard evolutionary theory, but it does compel us to make some important adjustments...
We did not invent gene transfer; DNA did. Genes are concerned with one thing above all else: self-perpetuation. If such preservation requires a particular gene to adapt to a genome it has never encountered before - if riding a parasite from one species to another turns out to be an extremely successful way of guaranteeing perpetuity - so be it. Species barriers might protect the integrity of a genome as a whole, but when an individual gene has a chance to advance itself by breaching those boundaries, it will not hesitate.
My argument will be that Darwinism is the only known theory that is in principle capable of explaining certain aspects of life. If I am right it means that, even if there were no actual evidence in favour of the Darwinian theory (there is, of course) we should still be justified in preferring it over all rival theories.
It's a firmly established fact straight from Biology 101: Traits such as eye color and height are passed from one generation to the next through the parents' DNA.But now, a new study in mice by researchers at Washington University School of Medicine in St. Louis has shown that the DNA of bacteria that live in the body can pass a trait to offspring in a way similar to the parents' own DNA.The latter explanation involves a major change in thinking because it suggests that traits affected by bacteria can pass from mothers to their offspring in the same manner as traits affected by mouse DNA.