
The press releases of these papers will be posted later in this thread.
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Can selection tie evolution more closely to physics?
https://arstechnica.com/science/2023/10/...o-physics/
EXCEPTS: Usually, when someone starts talking about the interface between evolution and physics, it's a prelude to a terrible argument that attempts to claim that evolution can't possibly happen. So, biologists tend to be slightly leery of even serious attempts at theorizing about bringing the two fields closer.
Yet this October has seen two papers that claim to describe how a key component of evolutionary theory—selection—fits in with other areas of physics. Both papers are published in prestigious journals (Nature and PNAS), so they can't be summarily dismissed. But they're both pretty limited in ways that probably are the product of the interests and biases of their authors. And one of them may be the worst written paper I've ever seen in a major journal.
So buckle up, and let's dive into the world of theoretical biology.
We can start with the terribly written paper. It introduces Assembly Theory, which is a potentially useful way of thinking about natural conditions that can enable combinatorial chemistry, generating a complicated mix of elaborate molecules. But that's not at all the way the authors, several of whom are chemists, introduce the idea.
The very first sentence of that paper sets up evolution as being difficult to make consistent with physics: "Scientists have grappled with reconciling biological evolution with the immutable laws of the Universe defined by physics." That's... not true. Evolution is perfectly compatible with physics, and we've known that for quite some time. It's so impressively untrue that the paper they cite in support of it only mentions physics once, and only to say that people have some misconceptions about it.
It doesn't get better from there... ("Assembly theory explains and quantifies selection and evolution")
[...] The second paper is written by a team that includes a bunch of astronomers, and it shows. Its focus is on finding parallels between selection in evolution and other processes that build complexity. The examples it uses are things like the building of ever-more complex mixtures of elements in stars and the growing complexity of minerals formed in planets—things that are of great interest to astronomers and planetary scientists.
Part of the paper involves identifying the parallels among these systems. "Evolving systems appear to be conceptually equivalent in that they display three notable attributes: 1) They form from numerous components that have the potential to adopt combinatorially vast numbers of different configurations; 2) processes exist that generate numerous different configurations; and 3) configurations are preferentially selected based on function," the authors write. In general, the evolution of all of these systems is also driven by the dissipation of energy.
The details may differ, but the authors argue that the parallels suggest that a natural law is appropriate to describe the behavior. The law they come up with is:
"Systems of many interacting agents display an increase in diversity, distribution, and/or patterned behavior when numerous configurations of the system are subject to selective pressure."
But, of course, there are lots of things that aren't parallel... ("On the roles of function and selection in evolving systems")
[...] None of this is to say that Assembly Theory is wrong, just that the challenge of obtaining the information needed to put it to use may range from impractical to impossible for many important questions. Figuring out how to use it effectively for situations beyond chemistry will be a real challenge. Unfortunately, the people who are proposing it are claiming it handles problems that don't exist and aren't addressed by it, so I expect that the challenge will be much harder than it needs to be... (MORE - missing details)
RELATED (scivillage): 'The "law of increasing functional information"
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Can selection tie evolution more closely to physics?
https://arstechnica.com/science/2023/10/...o-physics/
EXCEPTS: Usually, when someone starts talking about the interface between evolution and physics, it's a prelude to a terrible argument that attempts to claim that evolution can't possibly happen. So, biologists tend to be slightly leery of even serious attempts at theorizing about bringing the two fields closer.
Yet this October has seen two papers that claim to describe how a key component of evolutionary theory—selection—fits in with other areas of physics. Both papers are published in prestigious journals (Nature and PNAS), so they can't be summarily dismissed. But they're both pretty limited in ways that probably are the product of the interests and biases of their authors. And one of them may be the worst written paper I've ever seen in a major journal.
So buckle up, and let's dive into the world of theoretical biology.
We can start with the terribly written paper. It introduces Assembly Theory, which is a potentially useful way of thinking about natural conditions that can enable combinatorial chemistry, generating a complicated mix of elaborate molecules. But that's not at all the way the authors, several of whom are chemists, introduce the idea.
The very first sentence of that paper sets up evolution as being difficult to make consistent with physics: "Scientists have grappled with reconciling biological evolution with the immutable laws of the Universe defined by physics." That's... not true. Evolution is perfectly compatible with physics, and we've known that for quite some time. It's so impressively untrue that the paper they cite in support of it only mentions physics once, and only to say that people have some misconceptions about it.
It doesn't get better from there... ("Assembly theory explains and quantifies selection and evolution")
[...] The second paper is written by a team that includes a bunch of astronomers, and it shows. Its focus is on finding parallels between selection in evolution and other processes that build complexity. The examples it uses are things like the building of ever-more complex mixtures of elements in stars and the growing complexity of minerals formed in planets—things that are of great interest to astronomers and planetary scientists.
Part of the paper involves identifying the parallels among these systems. "Evolving systems appear to be conceptually equivalent in that they display three notable attributes: 1) They form from numerous components that have the potential to adopt combinatorially vast numbers of different configurations; 2) processes exist that generate numerous different configurations; and 3) configurations are preferentially selected based on function," the authors write. In general, the evolution of all of these systems is also driven by the dissipation of energy.
The details may differ, but the authors argue that the parallels suggest that a natural law is appropriate to describe the behavior. The law they come up with is:
"Systems of many interacting agents display an increase in diversity, distribution, and/or patterned behavior when numerous configurations of the system are subject to selective pressure."
But, of course, there are lots of things that aren't parallel... ("On the roles of function and selection in evolving systems")
[...] None of this is to say that Assembly Theory is wrong, just that the challenge of obtaining the information needed to put it to use may range from impractical to impossible for many important questions. Figuring out how to use it effectively for situations beyond chemistry will be a real challenge. Unfortunately, the people who are proposing it are claiming it handles problems that don't exist and aren't addressed by it, so I expect that the challenge will be much harder than it needs to be... (MORE - missing details)
RELATED (scivillage): 'The "law of increasing functional information"