Why does the soul need the brain?

Why does the soul need the brain seems like a logical question especially in the context of the belief held by the leading ID proponent of the Discovery Institute Michael Egnor. He has written extensively on the theme of the immaterial soul that, in his view, is an independent entity, separate of the human body. What Dr. Egnor consistently fails to acknowledge is the obvious connection or interdependence between a functioning brain and self-awareness or consciousness. I wrote about it here.

If certain parts of human brain are damaged or disabled, just like in case of general anesthesia, the human brain loses the sense of consciousness or self-awareness either permanently or temporarily. The immaterial soul fails to make up for the damaged or disabled brain…

Dr. Egnor’s personal experiences (and he has many) as a neurosurgeon convinced him that many people, including many of his patients, with the great majority of their brains missing have developed and function normally. Egnor is convinced that an immaterial soul makes up for the loss of brain mass that is responsible for normal brain function in people with normal brain size or no damage to any of the brain parts.

It appears Dr. Egnor believes that unlike a computer software that can’t function without the computer hardware, human brain has an ability to make up for the loss of the hardware with the computer software – the immaterial soul.

Is Dr. Egnor’s view consistent with the readily available facts?
I personally see Dr. Egnor building and supporting a strawman by his selective choice of facts…Hey! That’s my opinion and that’s why we have this blog full of experts to disagree with me or Dr. Egnor…(I kinda like the guy though).

Let’s see…First off, not all cases of patients with missing parts of their brains experience the supposed miraculous saving powers of the immaterial soul. It appears that the amount of the missing part of the brain mass doesn’t seem to matter… What seems to matter more is which part (s) of the brain is missing and not how much of the brain mass is actually missing. Some parts of the brain seem essential for consciousness and self-awareness and others do not.

However, the main point of this OP is:

<strong> Why does the soul need the brain? Or why would human body need a brain at all, if the immaterial soul has an ability to compensate for the brain losses?

If the software (the soul) can operate without the hardware (the brain) why do we even need the brain in the first place?</strong>

It seems like a faulty or at least a wasteful design to me…

1,372 thoughts on “Why does the soul need the brain?

  1. CharlieM: Here Steiner give his views on percept, concept, the self and the evolution of philosophical thinking. You are welcome to make your argument against what he writes here.

    You write Steiner off, but how much of his works on or about philosophy have you actually studied? For instance, this or this.

    Studied? No I haven’t studied Steiner (or his lamb bladder hypotheses). There are too many first rate and second rate philosophers to read to spend time on Steiner. Life is short. That you stumbled into his lap is sad.You could have done so much more with your time.

    But I see he makes you happy. So whatever. I mean, Camus said that truth is better than illusion, but…..is it?

  2. BruceS: Consider this collection of sciences:anthropology, sociology, linguistics, psychology, neuroscience, biology.Anthropology, sociology, linguistics accept without further explanation the existence of language-using humans, along with any other human-specific features like human intentionality or human reasoning.But the others do not.

    What would be missing from the domain of explanations of the totality of these sciences.(I am not saying anything about reduction).Arguably, aesthetics and morality.

    But why meaning?

    Not sure I understand this comment, but to the extent that I do, my own Tractarian (maybe mystical?) sense is that meaning cannot and will not ever be explained by any science. Any attempts to do so necessarily involve some kind of self-referential paradox. So in my view it’s not just values that aren’t entirely “factual” or “empirical.” Pretty much every heavyweight philosophical issue is never going to be resolved by scientific inquiry (or likely by philosophical inquiry either).

    It’s the human condition.

    ETA: another way that this used to be put (In Tractarian times) was to say that discussions about meaning cannot be correctly put into an “ideal” (i.e. not self-contradictory) language. Philosophy can do that stuff because it’s not an empirical inquiry (or at least not one of the standard sort) and can be explicit about using incorrect language on occasion.

  3. Neil,

    Surely a nominalist (someone who thinks that numbers are really just names) would also think that mathematical sets are just names.

    Jesus H. Christ on a bicycle.

    Nominalists hold that names exist, but that mathematical objects (including sets) don’t. The word “set” obviously exists, but its referent doesn’t, according to mathematical nominalism.

    What is it with guys like you and Erik that prevents you from doing simple five-minute Google searches?

    From Wikipedia, for instance:

    In the foundation of mathematics, nominalism has come to mean doing mathematics without assuming that sets in the mathematical sense exist.

  4. CharlieM: ou are welcome to make your argument against what he writes here.

    It looks like watered down Kant to me, but put more vaguely. Hundreds of philosophers of that era were pushing various versions of watered down Kant. My own favorite of that bunch is Friedrich Paulsen (1846–1908) who was a student of Fechner’s and so threw a lot of panpsychism into his own Kantian brew. The thing is, I realize that stuff doesn’t count as defensible philosophy any more. The “arguments” (such as they ever were) have all been shredded, re-parsed, re-shredded, etc., etc. thousands of times, by generations of more acute people who have stood on the shoulders of their predecessors. You prefer to keep your head in the sand because one or another old-timer makes you feel good. And I said before, who am I to steal your fun/contentment?

    Anyhow, Kant is not really in my wheelhouse: you should take up your obsessions with Goethe and Steiner with KN. He may be more sympathetic. I remember him putting up with Erik’s scholastic hoo-ha for a long time. And you’re at least nicer than Erik. Plus KN is a professor who no doubt has to deal with attitudes such as yours in lots of intro classes.

  5. Neil Rickert: I’m quite puzzled by this argument.

    Surely a nominalist (someone who thinks that numbers are really just names) would also think that mathematical sets are just names.

    I usually say that I’m a fictionalist, and people seem to take fictionalism to be a kind of nominalism. Of course, I take mathematical sets to be useful fictions.

    I don’t think a nominalist could accept that sets are names. I think she would have to say that numbers are names, but names of what? Surely not “names of sets”, since that would introduce abstract objects into her ontology!

  6. keiths,

    There a number of papers on the swapping scenario. Block and Stalnaker come to mind. IIRC, there’s generally thought to be a gradual immersion into the local economy over a period of a couple weeks or something.

  7. J-Mac: Is dark energy physical?

    Yes, that is a good question. It is part of a deeper question discussed at SEP : what qualifies as physical for the physicalist? One popular answer is

    A property is physical iff it either is the sort of property that physical theory tells us about or else is a property which metaphysically (or logically) supervenes on the sort of property that physical theory tells us about.

    So the answer to your question about dark energy under that definition is that dark energy is part of a physical theory and so is physical.
    Now there are many issues with that definition discussed at SEP. One popular one is Hempel’s dilemma: does physical theory refer to current theory or a future, completed theory. The dilemma:
    1. If current, we know it will change, so we can be wrong about what is physical.
    2. If future, then physicalism is trivial, since we do not know what will be part of future physical theory.

    Your are welcome to include that issue in your quiver of anti-physicalist arguments. I suspect most won’t know of the possible replies.

  8. BruceS: One popular one is Hempel’s dilemma: does physical theory refer to current theory or a future, completed theory.

    Coincidentally, I was just reminding myself of Hempel (and Goodman) on theories this morning, when reading a poli-sci paper pushing a theory of political stability that is quite well-confirmed, but that I really don’t like. (I have an alternative that has no confirmation at all, but which I naturally like better.) I’m thinking of saying something like “Hey, there are an infinite number of theories consistent with any empirical data one can provide: you’ve gotta have a theory with terms and axioms that make intuitive sense!”

    Any additional suggestions?

  9. Kantian Naturalist: I don’t think a nominalist could accept that sets are names. I think she would have to say that numbers are names, but names of what? Surely not “names of sets”, since that would introduce abstract objects into her ontology!

    Quine annoyed a number of orthodox nominalists by accepting sets into his ontology. He claimed you actually couldn’t do math or science without them. Fighting ensued.

  10. CharlieM: So if there is a multitude of isolated alien cultures scattered throughout the galaxies do you think that any of them would also have invented geometry with its perfect circle? If so what would be the difference between their perfect circle and ours?

    The concept of the ideal tetrahedron is arrived at subjectively but does not depend on our subjective nature. It is discovered not invented. Reality is unity, everything is connected. It is only our ignorance that separates.

    If the aliens developed geometry by observing the same universe we both inhabit, then sure, they are likely to develop the same concept.

    I would say that the regularities we see, such as bodies that approximate circles or spheres, lead us to the idea of the perfect circle. Once we have math and geometry, we can codify them. I bristle at your use of the word “discover”, but I guess it’s as good a word as any to describe the process.

    What bothered me, and apparently other contributors here, was your statement about ideal forms being “more real” than physical ones. That sounded like reification or a category error. Having talked it out further, I am less convinced that you really were doing that.

  11. keiths: Nominalists hold that names exist, but that mathematical objects (including sets) don’t. The word “set” obviously exists, but its referent doesn’t, according to mathematical nominalism.

    Right. It’s all explained as far back as Locke!

  12. walto,

    (I hope it’s obvious to everyone that I’m just trying to make the simple point there that assumptions of appropriate arbiterhood are exactly as unlikely to be agreed upon as the tenets being disputed.)

    Sometimes yes, sometimes no. But so what?

    People at TSZ — including you — routinely argue that they are right, and that their opponents are wrong. There is nothing wrong with that.

    I have done that with respect to Bruce’s argument, and I have explained in detail why I think it fails. That’s entirely appropriate, and your objection to it is as hypocritical as it is goofy.

    As I pointed out yesterday, you are making the same dumb argument that Bill Cole has been making. That should give you pause.

    And in this particular case, Bruce was so embarrassed by his prior position that he even pretended to have never actually held it!

    If even Bruce is distancing himself from his earlier position, why on earth do you think it’s inappropriate for me to argue that it is incorrect?

  13. walto:

    Any additional suggestions?

    One criticism of underdetermination by the empirical is it ignores that accepted theories need to be justified by the usual scientific values as well: simplicity, unification, successful and novel predictions, etc.

    So you could attack the theory by saying it fails to meet one those critieria and that is a critical shortcoming. Or, since there are often conflicting criteria for a given theory, some of them need to be given higher weight than others in making a choice. So you could attack any examples of the rationale for the weighting used for such choices.

    But I am not sure if those will help with a theory that has no empirical justification at all. Maybe you can complain about no funding to do the relevant research which you think would surely provide the justification.

    ETA: I think your axioms making intuitive sense could be an example of the unification criterion, as long as the intuition is shared by many working in the field.

  14. Fair Witness, to CharlieM:

    I would say that the regularities we see, such as bodies that approximate circles or spheres, lead us to the idea of the perfect circle. Once we have math and geometry, we can codify them. I have no objection to your use of the word “discover”, but I would caution against reification of the concept.

    Right.

    Like you, I don’t object to the use of the word “discover” in a mathematical context. But it definitely doesn’t mean what Charlie would like it to mean. We don’t acquire the concept of an ideal tetrahedron by mentally visiting the Platonic realm in which such solids exist.

  15. keiths: People at TSZ — including you — routinely argue that they are right, and that their opponents are wrong. There is nothing wrong with that.

    Nothing whatever. But adding the stuff you routinely enjoy adding (You’re wrong! You’re embarrassed! My dick is bigger! I have won–you have lost!) serves no purpose whatever. It’s not a further argument, it convinces nobody, and is purely malevolent, pointless behavior serving no useful purpose accept that of some kind of weird self-glorification.

    It’s quite sensible of Bruce to want to “be the change” and we should all join him in that. Particularly you.

  16. BruceS,

    Thanks. I don’t think it would require a ton of funding to confirm my hypothesis (assuming it’s true in its current form, which it may well not be). It may just be a matter of investigating World Value Surveys and doing some historical research. But that work hasn’t been done and I don’t want to do it myself. Not really my cuppa. I’m not a social scientist.

  17. Kantian Naturalist: I don’t think a nominalist could accept that sets are names. I think she would have to say that numbers are names, but names of what? Surely not “names of sets”, since that would introduce abstract objects into her ontology!

    I can only speak for myself, as a mathematician.

    I take set theory to be a theoretical model. I take the definition of natural number as sets to be a way of modeling numbers within set theory.

    I take mathematical sets as not being at all like ordinary real world sets.

    Oh, and I take “exists” in mathematics to be a special mathematical meaning of “exists” which is not at all the same as our ordinary meaning of “exists”.

  18. Neil Rickert: Except that I deny that there are patterns, except as a consequence of human conventions.

    What I was starting from is this from you:

    Of course, other organisms likely also single out parts of the stuff and consider them things. But what those other organisms take to be things might be different from what we take to be things.

    For the first commonality between us, I was not trying to claim anything about patterns, only that for life to be possible, reality must have parts that organisms can reliably single out.

    I agree that explaining that stuff via real patterns is something more and requires human conventions. I think we agree on that too.

    It is privileging the patterns that are part of scientific explanations as real where I we differ.

  19. Fair Witness: If the aliens developed geometry by observing the same universe we both inhabit, then sure, they are likely to develop the same concept.

    That’s not at all obvious. We don’t actually observe geometry, though perhaps we are indoctrinated into believing that we do.

  20. Fair Witness:

    If the aliens developed geometry by observing the same universe we both inhabit, then sure, they are likely to develop the same concept.

    Neil:

    That’s not at all obvious. We don’t actually observe geometry, though perhaps we are indoctrinated into believing that we do.

    Fair Witness spoke of aliens developing geometry by observing the universe, not of aliens observing geometry.

  21. BruceS: It is privileging the patterns that are part of scientific explanations as real where I we differ.

    I’m not sure what that means.

    I should mention that my understanding of science is probably very different from yours.

  22. walto: Anyhow, Kant is not really in my wheelhouse: you should take up your obsessions with Goethe and Steiner with KN. He may be more sympathetic. I remember him putting up with Erik’s scholastic hoo-ha for a long time. And you’re at least nicer than Erik. Plus KN is a professor who no doubt has to deal with attitudes such as yours in lots of intro classes.

    Ha, I wish I had students like Charlie! My job wouldn’t be any easier but it would be a lot more fun!

    I do like Kant, and Goethe, and the philosophers influenced by both of them: Hegel, Nietzsche, and Husserl all come to mind. I’m not crazy about the teleological cosmic evolutionism that Steiner seems to share with Schelling and I’m not crazy about the intuition/concept distinction that Steiner seems to share with Schopenhauer, the early Nietzsche (Dionysus vs Apollo in Birth of Tragedy), and Bergson.

    But hey, at least Charlie’s guy is Steiner and not someone like Deepak Chopra, Ayn Rand, or (God forbid) Jordan Peterson!

  23. keiths:

    People at TSZ — including you — routinely argue that they are right, and that their opponents are wrong. There is nothing wrong with that.

    walto, today:

    Nothing whatever.

    walto, yesterday:

    Your view that you are an appropriate arbiter of whether or not an argument “fails” or whether it has been made “better than it was” is precisely why I think you should fuck off.

    If you don’t want the hole to get deeper, stop digging.

  24. Neil Rickert: I’m not sure what that means.

    I should mention that my understanding of science is probably very different from yours.

    I take real patterns as unobservables in scientific theories and scientific realism as saying these unobservables are real, where real amounts to three separate commitments: metaphysical, epistemic, and semantic, as detailed in SEP.

    Based on previous exchanges, I have no doubt that we differ on many aspects of the related philosophy of science.

  25. Neil, to Bruce:

    I should mention that my understanding of science is probably very different from yours.

    I don’t doubt that.

  26. Neil Rickert: That’s not at all obvious.We don’t actually observe geometry, though perhaps we are indoctrinated into believing that we do.

    As keiths indicated, perhaps you misread and confused “observed” for “developed” ?

  27. BruceS: That seems to be meaning internalism. Is that a fair description of your position?

    ETA: Meaning internalism is easily consistent with scientific explanations; externalism is not IMHO. But my philosophical intuitions are with meaning externalism. Hence my cop-out position.

    ETA 2: I think it is inconsistent with the science because psychologists and linguists would explain linguistic behavior without having access to the causal history. They would rely only current psychological states/processes.

    Of course, they would agree such states/processes are made possible because of a particular causal history. But they would not need the details of that history to explain the behavior.

    I was having a lively discussion with a friend about Millikan yesterday. He pointed out that there’s nothing about neuroscience in Millikan. That’s not where she anchors content. For her, we anchor semantic content at the system-level: the causal history of the organism (or populations of organisms) in the environment.

    I think that the casual use of words like “explain”, “anchor,” “locate,” and “determine” is really causing some problems for me here.

    I think it’s one thing to say that we need to look at occurring and dispositional causal powers to see how semantic content is realized in brain-body-environment dynamic loops. And it’s quite another to say that we need to look at past histories in order to figure out how those dynamic loops came into existence. And going to be some further (and prior?) task to figure out what the concept of “semantic content” is.

    But I think that philosophers get themselves into all sorts of trouble when they say that they are “explaining” some phenomenon when all they are really doing is explicating the concept of that phenomenon so that the concept is more useful for identifying it.

  28. keiths: People at TSZ — including you — routinely argue that they are right, and that their opponents are wrong. There is nothing wrong with that.

    walto, today:

    Nothing whatever.

    walto, yesterday:

    Your view that you are an appropriate arbiter of whether or not an argument “fails” or whether it has been made “better than it was” is precisely why I think you should fuck off.

    Those are consistent incidentally. As indicated you’ve never really been able to grok this stuff.

  29. walto,

    Those are consistent incidentally.

    Um, no. But keep digging if you must.

  30. walto: It looks like watered down Kant to me, but put more vaguely. Hundreds of philosophers of that era were pushing various versions of watered down Kant. My own favorite of that bunch is Friedrich Paulsen (1846–1908) who was a student of Fechner’s and so threw a lot of panpsychism into his own Kantian brew. The thing is, I realize that stuff doesn’t count as defensible philosophy any more. The “arguments” (such as they ever were) have all been shredded, re-parsed, re-shredded, etc., etc. thousands of times, by generations of more acute people who have stood on the shoulders of their predecessors. You prefer to keep your head in the sand because one or another old-timer makes you feel good. And I said before, who am I to steal your fun/contentment?

    Anyhow, Kant is not really in my wheelhouse: you should takeup your obsessions with Goethe and Steiner with KN. He may be more sympathetic. I remember him putting up with Erik’s scholastic hoo-ha for a long time. And you’re at least nicer than Erik. Plus KN is a professor who no doubt has to deal with attitudes such as yours in lots of intro classes.

    In his book Truth and Knowledge, Steiner writes:

    Present-day philosophy suffers from an unhealthy faith in Kant. This essay is intended to be a contribution toward overcoming this. It would be wrong to belittle this man’s lasting contributions toward the development of German philosophy and science. But the time has come to recognize that the foundation for a truly satisfying view of the world and of life can be laid only by adopting a position which contrasts strongly with Kant’s.

    Far removed from watered down Kantianism.

    And more

    As soon as one presupposes that a full reality is gained through perceptions of the sensory world, one is forever prevented from finding the answer to the question: What has the creative mind to add to this reality in the act of cognition? By necessity one shall have to sustain the Kantian option: Man must consider his knowledge to be the inner product of his own mind; he cannot regard it as a process that is capable of revealing a true reality. If reality lies outside the soul, then the soul cannot produce anything that corresponds to this reality, and the result is merely a product of the soul’s own organization.

    The situation is entirely changed as soon as it is realized that the human soul does not deviate from reality in its creative effort for knowledge, but that prior to any cognitive activity the soul conjures up a world that is not real. Man is so placed in the world that by the nature of his being he changes things from what they really are.

  31. Today:

    But adding the stuff you routinely enjoy adding (You’re wrong! You’re embarrassed! My dick is bigger! I have won–you have lost!) serves no purpose whatever. It’s not a further argument, it convinces nobody, and is purely malevolent, pointless behavior serving no useful purpose accept that of some kind of weird self-glorification.

    Yesterday:

    FWIW, I love all your posts that include “This is the Skeptical Zone.” I’ve made an album. They have sections like “Why it’s always OK for keiths to make silly remarks” “Favorite keiths brags about himself” (with and without self-linkage sub-groups) And my personal favorite batch: He really must think “skeptical” means “stupid”!

    Hypocrisy, thy name is walto.

  32. CharlieM: As soon as one presupposes that a full reality is gained through perceptions of the sensory world, one is forever prevented from finding the answer to the question: What has the creative mind to add to this reality in the act of cognition? By necessity one shall have to sustain the Kantian option: Man must consider his knowledge to be the inner product of his own mind; he cannot regard it as a process that is capable of revealing a true reality. If reality lies outside the soul, then the soul cannot produce anything that corresponds to this reality, and the result is merely a product of the soul’s own organization.

    The situation is entirely changed as soon as it is realized that the human soul does not deviate from reality in its creative effort for knowledge, but that prior to any cognitive activity the soul conjures up a world that is not real. Man is so placed in the world that by the nature of his being he changes things from what they really are.

    To me, that’s still watered down Kant.

    Look, if that kind of crap turns you on, go for it!

  33. walto,

    It’s quite sensible of Bruce to want to “be the change” and we should all join him in that. Particularly you.

    Bruce lied to cover up a mistake. If that’s “the change he wants to see”, then the last thing TSZ needs is for everyone to “be that change.”

  34. keiths: Um, no. But keep digging if you must.

    Exactly what I’m talking about. The “Um” is particularly revealing.

    As I said, you don’t get it. But I’m not going to be able to undo a lifetime of disposition to that sort of malevolent behavior, obviously. You don’t understand the difference between arguing for a position and calling somebody else names. I can’t help you to understand this. Your parents should have, maybe.

  35. keiths:
    walto,

    Bruce lied to cover up a mistake.If that’s “the change he wants to see”, then the last thing TSZ needs is for everyone to “be the change.”

    More of the same.

  36. Neil Rickert: Why would you expect me to have a position on dark energy?If anything, I’m skeptical about dark energy.

    What do you think causes the acceleration of the expansion of the universe then?

  37. walto:

    You don’t understand the difference between arguing for a position and calling somebody else names.

    Here is the sentence that prompted the last two days of histrionics from you:

    There’s no point in rehashing it unless you have a better argument to offer this time.

    That’s it.

    Get a grip, walto.

  38. CharlieM,

    Your three criteria — perfection, unlimited size, and changelessness — all failed as ways of deciding which of two things is “realer” than the other.

    Have you since come up with other criteria? (And no, “Steiner said it; I believe it; that settles it” is not a valid criterion.)

  39. walto: To me, that’s still watered down Kant.

    It looks very much like watered-down Bergson to me (see here).

    Look, if that kind of crap turns you on, go for it!

    I don’t know about “crap,” but I’m happy that Charlie has found a philosopher who speaks to him. Definitely not my cup of tea, but then again (I’ve been told) there are philosophers who don’t understand what I get out of Sellars or Adorno. To each their own; let a thousand flowers bloom, etc.

  40. keiths:

    My own position is this:in no case is there a metaphysical tether between a particular Joe’s use of the term “water” and a single substance.In other words, I would say that for all three Joes, “water” applies to both water and twater.

    Bruce:

    That seems to be meaning internalism. Is that a fair description of your position?

    I think so.

    It also nicely handles the issue of intentional inexistence. Since meaning is internal, it doesn’t matter whether there is anything “out there” to correspond to a given word. The internal state is enough to grant the word meaning.

  41. keiths: Your three criteria — perfection, unlimited size, and changelessness — all failed as ways of deciding which of two things is “realer” than the other.

    It’s better than your position that the only things that are real are physical/material.

  42. Mung,

    It’s better than your position that the only things that are real are physical/material.

    Can you support that with an actual argument?

  43. Kantian Naturalist: It looks very much like watered-down Bergson to me (see here).

    Would you deny that Hegel is a Kantian?

    I agree with the flowers blooming stuff. If it makes Charlie happy, he’s certainly welcome to it as far as I’m concerned. I don’t get the desire to keep posting that stuff here, but I suppose it’s not much different from people posting Bible extracts.

  44. keiths: There’s no point in rehashing it unless you have a better argument to offer this time.

    Did you forget to fuck off?

  45. keiths: Dude, where do you come up with this shit?

    From the things your write. What you should say, is that when you say “Superman” or when you say “Middle Earth” you don’t really mean those things, you mean something else, something physical and real.

  46. Massimo Pigliucci:

    I don’t think that an ontology based only on fundamental physics is sufficient to make sense of the world.

    HT: Neil

    And an exercise for keiths:

    I am missing the point.
    I am missing the point.
    I am missing the point.

  47. keiths: Do you think that those social constructs are non-physical? If so, how are they able to causally influence the physical world?

    Of course they are physical. That was my point. But you denied it. So now you are contradicting yourself.

    keiths: Those social constructs are just representations writ large and shared among many people.

    Those social contracuts are “Superman” and “Middle Earth.”

    And by your own admission, they are physical and real.

  48. Fair Witness: As keiths indicated, perhaps you misread and confused “observed” for “developed” ?

    It doesn’t change the point. Earlier you wrote:

    If the aliens developed geometry by observing the same universe we both inhabit, then sure, they are likely to develop the same concept.

    But we do not develop geometry by observing.

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