You seem to be under the impression that Einstein’s papers were not reviewed by professional physicists.
That’s incorrect: They were reviewed by journal editors who were professional physicists.
The modern peer review system was invented because during the 20th century the submissions to journals greatly increased both in number and in sub-field specialization. While journals also increased in number and specialization, they couldn’t keep up with that and had to “outsource” the review process.
science itself seemed to run out of puff after Einstein.
This is quite wrong.
Even Einstein’s field, theoretical physics, had significant progress until at least the mid-70s, when the Standard Model was completed. Subsequent stagnation was probably largely due to the difficulty of obtaining experimental data: testing all the features of the Standard Model required an enormous effort culminating in the LHC, and presently we can’t do experiments on Plank scale phenomena.
Other areas of science greatly progressed. Biology, for instance, is still far from stagnation.
You seem to be under the impression that Einstein’s papers were not reviewed by professional physicists. That’s incorrect: They were reviewed by journal editors who were professional physicists.
But Einstein only needed one journal editor to decide that his paper was good stuff that would rock the boat, whereas under peer review, he would in practice need every peer reviewer to agree that his papers did not rock the boat.
Under the old system, he needed one of n to get published. Under the new system, it tends to be closer to n of n.
Consensus, as Galileo argued, produces bad science.
And, pretty obviously, we are getting bad science.
Recall the recent study reported in nature that only three of fifty results in cancer research were replicable.
The background to this replication study is that biomedical companies pick academic research to try to develop new medications—and they decided they needed to do some quality assurance.
But Einstein only needed one journal editor to decide that his paper was good stuff that would rock the boat, whereas under peer review, he would in practice need every peer reviewer to agree that his papers did not rock the boat.
The exact rules of peer review vary between different journals and conferences, but in general no single referee has veto power. If there is major disagreement between referees, they will discuss, and if they fail to form a consensus the journal editors / conference chairmen will step in and make the final decision, after possibly recruiting additional referees.
This seems to be a more accurate process than having a single editor making a decision based on only their own expertise.
Recall the recent study reported in nature that only three of fifty results in cancer research were replicable.
That’s a false positive problem, while you seemed to be arguing that peer review generated too many false negatives.
Anyway, neither referees nor editors try to replicate experimental results while reviewing a paper. That’s not the goal of the review process.
The review process is not intended to be a scientific “truth” certification. It is intended to ensure that a paper is innovative, clearly written, easy to place in the context of the research in its field, doesn’t contain glaring methodological errors and is described in sufficient detail to allow experimental replication.
Replication is something that is done by independent researchers after the paper is published.
The stagnation of theoretical physics in the last few decades is also due to information cascades and other sociological/political effects; see The Trouble with Physics by Lee Smolin.
There was no such stagnation. This is the period which saw M-theory, the holographic principle, and the twistor revival, three of the great theoretical advances of all time, and in general there was an enormous elevation in the level of technical knowledge. Smolin is just peeved that string theory is where all the action was.
This is the period which saw M-theory, the holographic principle, and the twistor revival, three of the great theoretical advances of all time, and in general there was an enormous elevation in the level of technical knowledge.
The question is whether these theories correspond to reality.
Are those on par with Einstein’s work? (Maybe they’re close enough—though I’d wait a bit longer before saying that; but if you count how many physicists are working today and how many were working in the early 20th century...)
They are not. Einstein took some existing math and the hints of new physics and built a beautiful model on top of it, with marvelous new predictions, all of which pan out. Then he did it again 10 years later.
Nothing like it has been repeated since. Creation of QM was close, but it was a collective effort over decades, still quite unfinished.
There was no such stagnation. This is the period which saw M-theory, the holographic principle, and the twistor revival,
I understand M theory sufficiently well to be seriously underwhelmed.
M theory and the holographic principle suspiciously resemble postmodernism: insiders talking to each other in ways that supposedly demonstrate their erudition, without any external check to verify that they are actually erudite, or even understand each other, or even understand what they themselves are saying. Twistors are valid and erudite mathematics, but don’t seem to get us any closer to anything interesting.
M theory is just string theory only more so. The trouble with string theory as a theory of spacetime is that it takes place in a fixed space time background, thus inherently makes no sense whatever. If you start with a contradiction, you can deduce anything you please. The central problem in any quantum theory of spacetime is that you have no fixed spacetime to stand upon, and string theory just blithely ignores the problem. That is not an advance in theoretical physics, that is finding weak excuses to publish meaningless papers.
The trouble with string theory as a theory of spacetime is that it takes place in a fixed space time background
That’s just an approximation. Those situations (flat space, hyperbolic space) are really just asymptotically fixed—the form of the space-time in the infinite past or the infinite future is fixed. But in between, you can have topology change.
String theory in positively curved space may even allow for topologically distinct asymptotic outcomes, but that is still a topic of great confusion.
There is a standard paradigm for applying string theory to the real world—grand unification, broken supersymmetry, compactification. I’d give that about a 50% chance of being correct. Then there are increasingly unfamiliar scenarios, the extreme of which would be a theory in which you don’t even have strings or branes, but in which some of the abstract properties of string theory (e.g. the algebraic structure of the amplitudes) still hold. The twistors could swing either way here: twistorial variables may exist for an orthodox string scenario, but there may also be twistorial theories way outside the usual M-theoretic synthesis.
That’s just an approximation. Those situations (flat space, hyperbolic space) are really just asymptotically fixed—the form of the space-time in the infinite past or the infinite future is fixed. But in between, you can have topology change.
I don’t think string theory as it exists is capable of of describing a space time that undergoes topological change as a result of the dynamics of the strings. They talk about branes undergoing topological change, but they undergo topological change within a given background spacetime that acts without being acted upon.
And if it is capable of describing such an event, string theorists don’t really have any idea of how to make it do it.
People go into Quantum Gravity because it is the big unsolved problem, find they cannot solve it, but they have to publish papers anyway. And so they do, resulting in postmodern physics.
There is a string counterpart to the old idea of “spacetime foam”, it’s called a “Calabi-Yau crystal”. The crystal fluctuates and branes are defects in the crystal. There are more things in string theory, sam0345, than are dreamt of in your philosophy.
That is just people waving their hands fast to distract you from noticing that not only do you have no idea what they are saying, they have no idea what they are saying either: Much like postmodernism, hence I described it as “postmodern physics”
Now you’re being paranoid. This isn’t a bluff, these aren’t just words. Compactification on a Calabi-Yau is one of the basic ideas for how to get realistic physics out of string theory, and “crystal melting” is a model of its microscopic quantum geometry.
Yes, and there are so many Calabi-Yau manifolds that just knowing that the world is a ten-dimensional spacetime with six dimensions rolled up into some Calabi-Yau manifold yields hardly any falsifiable prediction at all.
You seem to be under the impression that Einstein’s papers were not reviewed by professional physicists. That’s incorrect: They were reviewed by journal editors who were professional physicists.
The modern peer review system was invented because during the 20th century the submissions to journals greatly increased both in number and in sub-field specialization. While journals also increased in number and specialization, they couldn’t keep up with that and had to “outsource” the review process.
This is quite wrong.
Even Einstein’s field, theoretical physics, had significant progress until at least the mid-70s, when the Standard Model was completed. Subsequent stagnation was probably largely due to the difficulty of obtaining experimental data: testing all the features of the Standard Model required an enormous effort culminating in the LHC, and presently we can’t do experiments on Plank scale phenomena.
Other areas of science greatly progressed. Biology, for instance, is still far from stagnation.
But Einstein only needed one journal editor to decide that his paper was good stuff that would rock the boat, whereas under peer review, he would in practice need every peer reviewer to agree that his papers did not rock the boat.
Under the old system, he needed one of n to get published. Under the new system, it tends to be closer to n of n.
Consensus, as Galileo argued, produces bad science.
And, pretty obviously, we are getting bad science.
Recall the recent study reported in nature that only three of fifty results in cancer research were replicable.
The background to this replication study is that biomedical companies pick academic research to try to develop new medications—and they decided they needed to do some quality assurance.
The exact rules of peer review vary between different journals and conferences, but in general no single referee has veto power. If there is major disagreement between referees, they will discuss, and if they fail to form a consensus the journal editors / conference chairmen will step in and make the final decision, after possibly recruiting additional referees.
This seems to be a more accurate process than having a single editor making a decision based on only their own expertise.
That’s a false positive problem, while you seemed to be arguing that peer review generated too many false negatives.
Anyway, neither referees nor editors try to replicate experimental results while reviewing a paper. That’s not the goal of the review process.
The review process is not intended to be a scientific “truth” certification. It is intended to ensure that a paper is innovative, clearly written, easy to place in the context of the research in its field, doesn’t contain glaring methodological errors and is described in sufficient detail to allow experimental replication. Replication is something that is done by independent researchers after the paper is published.
The stagnation of theoretical physics in the last few decades is also due to information cascades and other sociological/political effects; see The Trouble with Physics by Lee Smolin.
There was no such stagnation. This is the period which saw M-theory, the holographic principle, and the twistor revival, three of the great theoretical advances of all time, and in general there was an enormous elevation in the level of technical knowledge. Smolin is just peeved that string theory is where all the action was.
The question is whether these theories correspond to reality.
Holography likely does, in some form, given that it pops up from every direction of research. The rest—who knows.
Are those on par with Einstein’s work? (Maybe they’re close enough—though I’d wait a bit longer before saying that; but if you count how many physicists are working today and how many were working in the early 20th century...)
They are not. Einstein took some existing math and the hints of new physics and built a beautiful model on top of it, with marvelous new predictions, all of which pan out. Then he did it again 10 years later.
Nothing like it has been repeated since. Creation of QM was close, but it was a collective effort over decades, still quite unfinished.
I understand M theory sufficiently well to be seriously underwhelmed.
M theory and the holographic principle suspiciously resemble postmodernism: insiders talking to each other in ways that supposedly demonstrate their erudition, without any external check to verify that they are actually erudite, or even understand each other, or even understand what they themselves are saying. Twistors are valid and erudite mathematics, but don’t seem to get us any closer to anything interesting.
M theory is just string theory only more so. The trouble with string theory as a theory of spacetime is that it takes place in a fixed space time background, thus inherently makes no sense whatever. If you start with a contradiction, you can deduce anything you please. The central problem in any quantum theory of spacetime is that you have no fixed spacetime to stand upon, and string theory just blithely ignores the problem. That is not an advance in theoretical physics, that is finding weak excuses to publish meaningless papers.
That’s just an approximation. Those situations (flat space, hyperbolic space) are really just asymptotically fixed—the form of the space-time in the infinite past or the infinite future is fixed. But in between, you can have topology change.
String theory in positively curved space may even allow for topologically distinct asymptotic outcomes, but that is still a topic of great confusion.
There is a standard paradigm for applying string theory to the real world—grand unification, broken supersymmetry, compactification. I’d give that about a 50% chance of being correct. Then there are increasingly unfamiliar scenarios, the extreme of which would be a theory in which you don’t even have strings or branes, but in which some of the abstract properties of string theory (e.g. the algebraic structure of the amplitudes) still hold. The twistors could swing either way here: twistorial variables may exist for an orthodox string scenario, but there may also be twistorial theories way outside the usual M-theoretic synthesis.
I don’t think string theory as it exists is capable of of describing a space time that undergoes topological change as a result of the dynamics of the strings. They talk about branes undergoing topological change, but they undergo topological change within a given background spacetime that acts without being acted upon.
And if it is capable of describing such an event, string theorists don’t really have any idea of how to make it do it.
People go into Quantum Gravity because it is the big unsolved problem, find they cannot solve it, but they have to publish papers anyway. And so they do, resulting in postmodern physics.
There is a string counterpart to the old idea of “spacetime foam”, it’s called a “Calabi-Yau crystal”. The crystal fluctuates and branes are defects in the crystal. There are more things in string theory, sam0345, than are dreamt of in your philosophy.
That is just people waving their hands fast to distract you from noticing that not only do you have no idea what they are saying, they have no idea what they are saying either: Much like postmodernism, hence I described it as “postmodern physics”
Now you’re being paranoid. This isn’t a bluff, these aren’t just words. Compactification on a Calabi-Yau is one of the basic ideas for how to get realistic physics out of string theory, and “crystal melting” is a model of its microscopic quantum geometry.
Yes, and there are so many Calabi-Yau manifolds that just knowing that the world is a ten-dimensional spacetime with six dimensions rolled up into some Calabi-Yau manifold yields hardly any falsifiable prediction at all.