Darwinism, Reproduction and QM

Fra

A clarification, since I have a feeling that the common confusion to think of observers and humans also cause confusion as to what subjective law means (in any sensible way that is)

Observer dependent obviously doesn't mean that scientist 1 and scientist 2 can make consistent and disagreeing assessement of physical law.

The way this makes sense is instead to ponder what physical laws are DISTINGUISHABLE from the poitn of view of say one of the primordal observers? Ie. an electron and a quark might "SEE" different laws of physics, and this might be a key to unification and their mutual interactions or non-interactions.

For example, one could picture that to the primordal observers above a some imagine unification energy, the forces are simply indistinguishable.

This is yet different from the external view of say a human run laboratory.

So this subjective view of evolvtion law by no means threatens the objectivity of HUMAN science.

/Fredrik

Coldcall

Hi Fra,

Yes i am afraid i dont accept that one particle can "observe" another since it has no relatively complex information processing capabilities. So yes when i talk about observers i mean biological systems which have a) sensors to interpret the physical environment b) information processing ability.

Hence this is why i reject the notion of "decoherence" as anything other than a FAPP construct.

Of course i am biased because my view is that qm is actually a science of "consciousness" or lets say a framework for creating a physical reality, which is not possible without the information processing capabilities found in biological systems.

Fra

Hello Coldcall,

I think your requirement is fulfilled also by physical non-living systems.

The "sensors" of a physical systems in general are that it can respond to gravity, electromagnetic fields, strong and weak fields.

The information processing can be thought of as the internal equilibration processes. If you excite a system, internal reconfigurations can take place. All this can be be thought of as information processing and representations of memory.

It's just that of course biological life, and in particular the human brain is exceedingly more complex.

On brain level we have decisions and actions due to brain processing the sensory inputs, the actions often mean controlling muscles etc.

On particle leve we have the physical actions describing the responses of a small system to perturbation, this response can be thouhgt of as information processing. A given input, can via a rational action conjectures lead to a preferred output.

The notion of quantum superposition might (here I'm throwing in a yet unproved but conjectured feature of my own thinking) be possiblt to explain as a form of preferred representationa of a parially lossy compression of an uncertain input. Then the observers actions are evaluated so as to account for several possibilities at once.

After all, even an atom is an incredibly complex thing, if you think about it's component an not to mention it's significant mass. So physical systems are IMO certainly "complex enough" to qualify for the traits you mention.

But I certainly respect your position, I just don't see where in the complexity chain you draw the limit. I think in your view, you need to explain at what complexity level your version of information processing occurs.

No quantum physics experiment actually incorporates the human brain. It's not the observation of the scientists that is in question, it's the measurement device observing something. So no brains involved ?

/Fredrik

Coldcall

Fra,

"The "sensors" of a physical systems in general are that it can respond to gravity, electromagnetic fields, strong and weak fields."

Thats not the same as biologically evolved sensors. The fact that a particle is affected by gravity or radiation does not equate with it sensing those things.

"No quantum physics experiment actually incorporates the human brain. It's not the observation of the scientists that is in question, it's the measurement device observing something. So no brains involved?"

Of course they do. Each and every quantum experiment is based on human knowledge and our observations either directly or through a proxy such as a geiger counter or whatever.

If you can show me a way to measure a quantum state of any kind without some sort of interaction by a human directly or indirectly that would be much appreciated.

Fra

To me it is. The difference is complexity. this is what I tried to convey in my first post, the ability to sense the interaction forces might be a result of evolution of physical law and it's representation in evolution of matter system.

When I ask a question, why does the laws of nature look like the do? I do have in mind an "explanation" in terms of evolved inference systems. And in my personal abstraction the "sensors" of an inference systems can be thought of as the boundary of the system, which is the first line of interaction, which is then further processes internally.

I can not answer this myself, but a typical question would be, why are there 4 fundamental forces? And the answer should hopefully follow as we scale the complexity of the "observer" up from a primordal observer, to where gravity is distinguished and then the strong and weak and electromagnetic interactions.

Why does a primordal quantum observer evolve the ability to distinguish gravity from the rst of the interactions? Probably in order to survive (to stay stable).

Further, why does this observer evolve the sensory capabilitis to distinguish the strong force from the electroweak? Well, probably because it's what the competition requires. (adapt or die).

My view of this unifcation scale is an evolutionary one. As more complex observers emerge, the diversity of sensory capatibiles increases - just like in biology.

Hmm ok, if you mean in the sense that all measurement devices is operated an interpreted by humans, and that "science" as we know it, is indeed a human endeavour then you have a point.

But I was trying to keep the discussion at anothre level. In a sense everything I do or speak of, including anything I want is going on in my brain, yes.

I do not question any of that.

I just mean that quantum weirdness can't be entirely dismissed to human mind, since the interference patterns occuring in nature, are consistent with naturs parst acting upon each other AS IF they were observing each other.

/Fredrik

Coldcall

Hi Fra,

"To me it is. The difference is complexity. this is what I tried to convey in my first post, the ability to sense the interaction forces might be a result of evolution of physical law and it's representation in evolution of matter system."

Yes but that difference in complexity between a particle and a biological system is of an exponential nature. And yes the extra ability to sense the forces intelligently has emerged as the universe matures. Hence that capability and one i equate with the ability to process reality re qm, was not present until the universe had enough time to gain the complexity we are discussing.

"...My view of this unifcation scale is an evolutionary one. As more complex observers emerge, the diversity of sensory capatibiles increases - just like in biology"

I agree with the above. I think where we differ in opinion is that i believe the capacity to process reality is directly linked to our biological capacity to process complex information. So in my view, particles on not independently capable of causing reality to occur (or causing wave function to collapse).

IMO, The only way a particle can act as a trigger for the processing of reality (through wave function collapse) is if that particle has been manipulated by a biological system. So that particle acting as an extension of biological consciousness may be able to collapse a wave function....but only beacause a biological system is entangled with it in the first place.

"I just mean that quantum weirdness can't be entirely dismissed to human mind, since the interference patterns occuring in nature, are consistent with naturs parst acting upon each other AS IF they were observing each other."

But i think that is exactly why it is so weird - qm being the framework of laws governing how our reality unfolds into what we call "objective" physicality.

apeiron

So in this view, what is the status of parts of the world or universe which are not being observed in a biologically complex fashion?

Say there is a strata of uranium deep in the ground. No complex senses are detecting it. Would it be decaying or remain in a state of superposition until some mining company comes along to dig it up, assay if for its value?

Or what about the cosmic ray that struck some cell in my body many years ago and set in train cancerous changes. Did the cell have the complexity to collapse the wave function or does it all have to wait until I become aware of the fact of the cancer?

tj8888

I guess I thought PAP would have a more gradual collapse of the wave function of various systems across the universe, thereby doing a more gradual fine tuning. Just for the sake of this discussion lets just make the huge assumption that wave function collapse is somehow linked to animal nervous systems and perception in some way. Could there then be an extending sphere of influence as wave functions are collapsed by a greater and greater number of observations? Also, as perceptual systems made "measurements" with greater accuracy these collapses might restrict values to a greater and greater degree.

NWO

Originally Posted by Coldcall
Yes i am afraid i dont accept that one particle can "observe" another since it has no relatively complex information processing capabilities. So yes when i talk about observers i mean biological systems which have a) sensors to interpret the physical environment b) information processing ability.

NWO

Guys I`m not a physicist(gcse level) but have a question.... If by the power of observation you bring the atom out of super position into a solid stae we percieve as reality, what was doing it before we the conscious observers were here to observe and create reality. I have the esoteric answer which is... the universe and everything in it is consciousness. The big bang happened because of the creators intention to expierience it`s self. so it manifested it`s self outwards as consciousness into everything that exists, so not only are we part of God( I`m not religious in anway) but we also have all the power to create as God does and his greatest gift that he gave to us is free will......... but from your physics eyes what happened before we were around?

Fra

If you want to know what "normal science" says, "observer" in quantum mechanics really does NOT refer to a "human observer". This is a misconception. It traditionally refers to one system (a measurement device) interacting with another system.

"Observation" is an abstraction that refers to two subsystems systems interacting and observing each other.

This is the same in Einsteins relativity, observer really does not refer to "human", it can refers to any material systems "communicating" with another one.

So before you and me were around there where other humans, before they were areound there were monkeys. Before that there was other animals, all the way down to life with lowe and lower complexity. Before cellular life was around, there was also complex chemistry. Take this all the way down to the idea of the big bang.

But of course, as you picture this "scale" we also expect to scale the interactions back to a point of unification. So the simple observers would possible also see just "simple laws". All this w/o humans.

/Fredrik

WaveJumper

The problem with this is that you forgot to include the human as an essential part of the system "observer - observed". It's the human that does the measurement. If it's a machine by itself(human is absent),the system is in a superposition of states until knowledge of the system's state(measurement) forces it into a definite state.

Fra

Yes, humans build measurement devices, interpret data as part of human science and so one. There is no question about that.

But I wanted to point out to NWO that whenever one in relativity or QM talk about "observers", it really does not refer to humans. Quantum mechanics is not a theory of the human brain, nor is relativity a theory of how the human brain is affected my motion or gravity.

I'm the first to admit that there are interesting analogies with actions of the brain, and actions of physical systems when it comes to weighting possibilities, but it's still two different domains of complexity. The conventional quantum mechanics is not a theory of the human brain.

I think we should try to see the relevant differences here and not confuse the unavoidable human role in EVERYTHING we do or talk about, since we are humans, and the scientific consensus that we are still able to produce about how nature works, that alll humans agree upon. One could also say that nature agrees upon it, since nature is largely consistent with our understanding.

I think trying to explain the interference patterns of double slit experients, the stability of atoms, the photoelectric effect, or the clock dilations or SR or GR by introducing the human mind more than what is already obvious anyway since we are humans is IMO out of reasonable focus.

/Fredrik

apeiron

Like I asked, Coldcall, what does this view then commit you to in some concrete cases?

Say there is a strata of uranium deep in the ground. No complex senses are detecting it. Would it be decaying or remain in a state of superposition until some mining company comes along to dig it up, assay if for its value?

Or what about the cosmic ray that struck some cell in my body many years ago and set in train cancerous changes. Did the cell have the complexity to collapse the wave function or does it all have to wait until I become aware of the fact of the cancer?

And besides, where was it ever proved that collapse does not happen in the absence of human observation? In the history of QM, the collapse was only placed in the human mind as a last resort - through a failure to place the collapse out in the environment.

WaveJumper

I see no way to restore the old idea of atoms being billiard balls and the human mind being the result of a physical brain. I see no way to interpret the ontology of QFT as anything more than humans, objects, planets, etc. being instant excitations of fields comprising what we term "the universe". Atoms and molecules passing through a double slit as waves/fields when unobserved don't lend credibility to a realist picture of structured, localised objects in space.
Physical, invariant objects with definite properties in space is a misconception, found in our perception at the macro scale and adopting realism as a starting point for interpreting reality and nature is bound to failure IMO. Such a local realistic picture is inconsistent with experiments and needs adjustment.

WaveJumper

Multi-particle systems are best treated as fields. This is what gives QFT the edge over QM. Until obervers are present, i'd say, those fields don't have the definite properties that we seem to perceive as matter in space. There are no objects, there are events. QFT confirms this and QFT is the best tested of all physical theories.


Time is still very puzzling but Time 'flowing' and in only one direction is to be found in your head. It is an illusion. I'd say that all events exist out there(as pictured in GR) and the apparent distinction of past, present and future is an illusion created by awareness causing collapse of the 'proper' wavefunctions to create the macroscale we inhabit.

That was my point in my previous reply to Fra - we can't divorce the conscious human from the system "measurement apparatus - measured event". In the end, it is always the human awareness that objectifies the results of measurements, now, tomorrow or in 1 billion years.

apeiron

So you would be believing that uranium does not decay independent of a human observation? The deposit just is a wavefunction evolving and waiting to be collapsed into a history of events going back to when each uranium atom was first created in a supernova? Or because the supernova was not being witnessed at the time, part of prior wavefunctions back to the first moment?

I thought we were talking quantum reality? Time does flow in a background dependent formalism like QM. GR and this blocktime reply is based on precisely the classical reality you want to deny.

The wavefunction actually does exist in time. So if consciousness is required, then it was my awareness of the cancer that is the collapse event. Coldcall perhaps believes the cell itself perhaps had the biological complexity.

Now I'm wondering what if I die without ever realising I had a cancer caused by a cosmic ray? Maybe it even caused a brain cancer, so disabling my awareness is ways that absolutely prevented my making the observation?

First, we can divorce ourselves from the modelling of reality in any regard. Second, the basics of good modelling is to divorce ourselves as much as possible.

The formalism of QM does not specify a machinery of collapse. That is why it has become a matter of interpretation. In practice, when using QM models, people work round the collapse issue in practical ways. And that is why I am suggesting you talk about your chosen interpretation in relation to everyday life concrete examples. As it stands, we are left free to place the collapse anywhere we want it. Why not start with where it makes the most commonsense - out in the busy world of interacting things?