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Classical Levels, Russellian Monism and the Implicate Order

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Abstract

Reception of the Bohm-Hiley interpretation of quantum mechanics has a curiously Janus faced quality. On the one hand, it is frequently derided as a conservative throwback to outdated classical patterns of thought. On the other hand, it is equally often taken to task for encouraging a wild quantum mysticism, often regarded as anti-scientific. I will argue that there are reasons for this reception, but that a proper appreciation of the dual scientific and philosophical aspects of the view reveals a powerful and extremely interesting metaphysical view of the world. This view is akin to that of Russellian Monism, in which the empirical world studied by science is restricted to relational features that stand in need of some background intrinsic properties to ground their reality. This allows for a theory that can embrace a world which exhibits a reasonable and plausible sort of emergence (especially of domains that fall under classical concepts) while also making room for distinctive and scientifically intransigent properties such as consciousness.

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Notes

  1. Note that the requirement that the state of the detector and the observed position of the particle be correlated precludes such monstrosities as superluminal transmission of information, even as it strongly suggests some kind of ‘instantaneous connection’ between detector state and particle.

  2. In what follows I am assuming what might be called an ontological and absolute notion of the implicate order, which is controversial. However, a full discussion of this intricate concept would be the work of another paper (at least). In contrast to the interpretation I will use here it is defensible to consider both an epistemic and relativist understanding of the implicate order. But it is the absolute and ontological reading that leads to the thesis I want to explore here. It is easy to find passages in Bohm that support the absolute interpretation. In contrasting two examples of implicate and explicate orders, namely, Bohm’s favorite example of the ink drop and that of the hologram he makes a clear distinction between the former case where an underlying explicate order can be found and the latter case where it cannot. In such cases ‘there is no way ultimately to reduce the implicate order to a finer and more complex type of explicate order’ [6, p. 189]. Nor does it seem illegitimate to regard the implicate order as pointing to an ontological foundation of the world possessed of ‘undivided wholeness’ where ‘everything implicates everything’ [6, p. 197].

  3. I should note that, while clearly connected with my conception of classical levels, I am not concerned here with the physics problem of how QM can be reconciled with the existence of a classical world. This technical question remains a matter of controversy (see e.g. [30]). I am assuming that this problem can be successfully resolved so that what I am calling classical levels can be intelligibly understood in physical terms.

  4. There also exists the possibility of non-classical computing in which distinctively quantum properties of systems can be harnessed to radically speed up solutions to certain classes of computational problems, but not, apparently, fundamentally alter the results of classical computational theory (see [42, p. 126]).

  5. Of course, there is a long tradition in which appeals are made to quantum physics working in the brain to help explain mental efficacy and consciousness (see e.g. [16, 17, 45, 56]). We shall see that some fairly natural philosophical concepts consistent with or perhaps suggested by BI allow for a very interesting application of QM to the problem of consciousness which does not require compromising the conservative features of BI.

  6. It should be noted that as we investigate the details of how the brain operates we will inevitably reach an area which is truly quantum mechanical. If the brain forms a classical level, this area will be part of the explanation of how the classical level is sustained. If the brain is not a classical level then—rather surprisingly—the zone of non-classicality will encompass the large scale, long time, activity of the brain.

  7. Although very few scientists would endorse radical emergence, the view does have philosophical defenders. See for example [55] or [43]. For the history of radical emergence see [38]. For a discussion of the overall conceptual landscape associated with emergentist doctrines see [44].

  8. We should be liberal about what counts as prediction. As emphasized by Mark Bedau, many systems are such that the only way to predict what they will do is to simulate them (see [5]). But it seems clear that if the simulation involves only the nature and arrangement of the substrate, then the fact that the ‘prediction’ requires simulation and might not, in the real world, be made any where near as fast as the evolution of the system itself, does not count against the claim of conservative emergence.

  9. We can only say ‘could be’ because the properties of these acids are not determined solely by internal spatial arrangement. At the time, essentially nothing was known about how chemical properties depending on the nature of the internal constituents of chemical substances.

  10. An interesting philosophical discussion of the renormalization group approach to conservative emergence can be found in [4].

  11. It would not be quite right to say that the quantum potential was introduced or invented. Hiley is at pains to note that the quantum potential terms flows quite naturally out of the mathematics of standard QM. For example, in [22]: ‘Let me emphasize that what we have done above is very straightforward. Equation (3) [i.e. the real part of the Schrödinger equation in the form which makes the quantum potential explicit] is a direct result of the Schrödinger equation. Nothing mathematically new has been added’ [22, p. 148]. But prior to Bohm’s work the quantum potential was not envisioned as a fundamental element of reality.

  12. I will not put too much stress on the difference between dual aspect theory and neutral monism in this paper. Although these differences are important it is not easy to pigeon hole the Bohm-Hiley view definitively into one or the other theory. Roughly speaking, the primary difference between the theories is that neutral monism posits an underlying reality which is neither mental nor physical but to which both the physical and the mental in some sense reduce. Dual aspect accounts take the view that the fundamental reality is both mental and physical but there is no neutral ‘stuff’ underlying them. The quote above is suggestive of a dual aspect outlook. On the other hand, Hiley has been engaged in a research project which seeks to derive spacetime from some kind of radically non-spatial and non-temporal ‘pre-space’ in which ‘the space-time manifold is not a priori given. Rather it is to be abstracted from a deeper pre-space’ [14]. It is perhaps possible to regard the pre-space as playing the role of the neutral, but this is far from clear and it would take us too far afield to investigate it further.

  13. This is not to say that relational properties cannot frequently be inferred from the intrinsics. To take a different example, being a genuine Canadian twenty dollar bill is a relational property, but local investigation can of course make it very probable that a certain piece of paper in front of you is indeed legal tender (it could be, for example, that special paper is used which only the Canadian government has access to).

  14. Note that this claim does not put consciousness outside the reach of empirical science. In addition to its intrinsic nature, consciousness also figures in various relational structures. One clear example is the ‘space’ of perceived colors which forms a three dimensional structure of hue, saturation and luminance.

  15. It is worth noting the connection here with the views of Leibniz and Kant. Leibniz will be discussed below. Kant’s distinction between the phenomenal and noumenal realms is clearly closely related to the topics discussed here. An illuminating discussion of this aspect of Kant’s philosophy can be found in [33].

  16. This is of course a controversial claim. There are pure structuralists who deny that relations require any grounding in the properties of things. The most vigorous, or perhaps rabid, defense of such a pure structuralism can be found in [32].

  17. One might think that non-mental but representational properties might suffice. The problem with this suggestion is that only mental states seem to provide representational properties which are also intrinsic.

  18. A view akin to this can be found in [3].

  19. It is an interesting question whether all the classical levels themselves are mutually compatible. Recall the discussion above that suggested the quantum description of nature could count as an emergent level. If so, the set of ‘classical levels’ thus broadly construed could contain mutual incompatibilities or relations of complementarity.

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Acknowledgements

I would like to express my thanks to the organizers of the Helsinki conference in honour of Basil Hiley’s 75th birthday, and indeed to Professor Hiley himself, especially for his longstanding efforts to integrate philosophical thinking into the investigation of quantum physics. My thanks also to the journal’s anonymous referees whose challenging and insightful comments helped me to clarify the views expressed here.

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Seager, W. Classical Levels, Russellian Monism and the Implicate Order. Found Phys 43, 548–567 (2013). https://doi.org/10.1007/s10701-012-9672-6

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