Unspeakable God

February 26, 2026 – 11:00 pm

Hilary Putnam claimed as a consequence of the causal-descriptive semantic theory, that if you were a brain in a vat then you could never think that you were a brain in a vat, let alone say it, because the terms would fail to be properly causally connected to the things they were supposed to reference. (The brain in a vat would not have thoughts of vats created by the right sorts of sensory connections to real vats – only to mad-scientist-illusions of vats.) Similarly, if God exists outside of and independent of the causally structured universe – which He created – then we could not conceive of or even speak of Him.

There might be a couple of ways around this. Firstly, His incarnation as Christ might be a way for us to speak of a part of God – though not all of Him, naturally – since that part of Him does actually exist in the right causal relationships to us; though that brings up a further problem about how the ‘identity’ of the three parts can account for our different possibilities of reference. Secondly, God might have the same status as such fictional creatures as unicorns or dragons, in which the reference to non-causally-active entities (non-existent, in their cases) is constructed from other successfully referring terms. I have no idea how that could be achieved; and even if it was, would believers in God be satisfied with this status for God (or for their beliefs?)

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Zombie Iconography in a Portrait of St Catherine

February 21, 2026 – 12:00 am

A post on the Althouse blog discussing the Vogue cover of ‘Dr’ Jill Biden compared it to the figure of Catherine in a painting by Raphael.

She commented that

Catherine’s hands do not hang limply at her sides. They are expressive of ecstasy and placed in locations that would seem truly odd on a modern-day politico. Unlike Jill, she’s got her weight shifted to one side, and also unlike Jill, she’s leaning on what we know to be the device used to torture-murder-martyr her. 

The hands of Raphael’s Catherine seem oddly positioned because they’re misplaced. Catherine is in the pose for nude females known as venus pudica, and her hands are supposed to be covering her modesty – in this variant both the breasts and the pudendum. Raphael has modified the lower hand so that it is holding her clothing, but the upper hand is doing nothing useful.

Statues in this pose and with a pronounced twist to the body (contrapposto) often have some kind of an elaboration which can be used to give the statue extra support. (Even drapery would work in marble.) I notice that in the painting she’s leaning on her wheel, and I would guess that Raphael just thought that some such elaboration was a necessary part of the figure.

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Information Flow

February 18, 2026 – 9:18 pm

There is a fundamental sociological interest in the infrastructure or social conditions that facilitate the distribution of information in a society. Unfortunately, treatments of the ‘Flow of Information’ in the context of sociological or organizational theory typically refer to the ‘information channels’ that play that role with minimal if any definition or consideration of the criteria that need to be met in order for anything to play that role, while treatments in the context of Network Theory or in the domain of Logic, Language, and Computation offer only definitions that are irrelevant to the sociological context.

Begin with the necessary relevant agent interactions with information.

  1. Insertion

For some proposition p, agent x∈X, ax ∈ αx considered as a state transformation such that ax(σ1) = σ2 is an Insertion of p into σ1 iff

  1. (∃y∈X)[ (∃{xi:i = 0, …, n}⊂ X) (∃<axi ∈αxi: i = 0, …, n>) [ axi(σ1+i) = σ2+i & ax0 = ax ] &
    p ∈ Ivy,σ(2+n) \Ivy,σ1 ]
  2. Bx [ ‘i.’ ] ∈ qx
  3. Dx [ ‘i.’ ] ∈ qx

» An insertion is the deliberate addition to a state of affairs of an item of information that can be made available to some agent by some sequence of state-transforming actions by other agents.

  • Write Ins(ax, p, σ1).
  • We can also say that x Inserts p into σ1 by ax and write In(x, p, σ1, ax)
  • The restriction to available information is justified by the fact that information that is not available to any agent is sociologically inert.
  • The agent making the insertion must be supposed to be intending (desiring and believing) that the information will be sociologically active or else there is no sociological import to the insertion.
  • Note that in the case that n = 0, condition (i) is equivalent to
    • (∃y∈X) GenIv(ax, σ1, p, y) or
    • (∃y∈X)[ p ∈ genIv(ax, σ1, y) ]
  • Refinements to this definition are possible to account for situations in which condition (i) fails, or in which conditions (ii) and (iii) are not required to hold at the time of the action. For example, to take an extreme case, the Voyager spacecraft plaques would not qualify under this definition. Whether these possibilities should be considered need not delay us here.

Define an Information Insertion Point as a state of affairs, σ1 such that

  1. (∃p∈ℙ) (∃x∈X) (∃ax∈αx) [ ax(σ1) = σ2 &
  2. (∃y∈X)[ (∃{xi:i = 0, …, n} ⊂ X) (∃<axi ∈axi: i = 0, …, n>) [ axi(σ1+i) = σ2+i & ax0 = ax ] &
    p ∈ Ivy,σ(2+n) \Ivy,σ1 ] &
  3. Bx [ ‘ii.’ ] ∈ qx ]

» An information insertion point is a state of affairs to which some agent correctly believes he may add an item of information that can be made available to some agent by some sequence of state-transforming actions by other agents.

  • Write IIP(s1)

We shall also define the Information Insertion Point for p or P as an insertion point defined for a particular proposition p or class of propositions P as a state of affairs, σ1 such that

  1. (∀p∈ℙ) (∃x∈X) (∃ax∈αx) [ ax(σ1) = σ2 &
  2. (∃y∈X)[ (∃{xi:i = 0, …, n} ⊂ X) (∃<axi ∈axi: i = 0, …, n>) [ axi(σ1+i) = σ2+i & ax0 = ax ] &
    p ∈ Ivy,σ(2+n) \Ivy,σ1 ] &
  3. Bx [ ‘ii.’ ] ∈ qx ]

» An information insertion point for p/P is a state of affairs such that for every proposition of a certain kind some agent correctly believes he may insert that proposition as an item of information that can be made available to some agent by some sequence of state-transforming actions by other agents.

  • Without danger of ambiguity, we may write IIP(σ1, p) when referring to the case for single propositions or IIP(σ1, P) for the case of classes of propositions, and say that σ1 is an information insertion point for p or P.
  1. Extraction

For some proposition p, agent x∈X, state of affairs σ, ax ∈ αx is an Extraction of p from σ iff

(∃ω)(∃h)[ Mot(ω, x, h, σ, ax) &

» Some question ω motivates x to apply some supposed adduction h on σ using ax

Add(ax, h, σ) & h(σ) = p) ]

» which actually is an adducement applying the adduction h to σ, yielding p.

  • Write Ext(ax, p, σ) and say that ax is an extraction of p from σ.
  • We can also say that x Extracts p from σ by ax and write Ex(x, p, σ, ax)
  • The agent making the extraction must be supposed to be intending (desiring and believing) the action to adduce information, otherwise the retrieval of information is merely an accidental effect of the action and cannot be part of a sociologically significant process.

Define an Information Extraction Point as a state of affairs, σ such that

(∃p∈ℙ) (∃x∈X) (∃ax∈ax) [ (∃ω)(∃h)[ Mot(ω, x, h, σ, ax) & Add(ax, h, σ)
⇒ h(σ) = p]

» An information extraction point is a state of affairs from which some agent correctly believes he may extract an item of information that he is motivated to discover that is available to some agent.

  • Write IEP(σ)

We shall also define the Information Extraction Point for p or P as an insertion point defined for a particular proposition p or class of propositions P as a state of affairs, σ such that

(∀p∈ℙ) (∃x∈X) (∃ax∈ax) [ (∃ω)(∃h)[ Mot(ω, x, h, σ, ax) & Add(ax, h, σ)
⇒ h(σ) = p]

» An information extraction point for p/P is a state of affairs such that for every proposition of a certain kind some agent correctly believes he may extract that proposition as an item of information that he is motivated to discover that is available to some agent.

  • Without danger of ambiguity, we may write IEP(σ, p) when referring to the case for single propositions or IEP(σ, P) for the case of classes of propositions, and say that σ is an information extraction point for p or P.
  1. Transmission

Let p be a proposition, σ1 a state of affairs, such that IIP(σ1, p)

σ = (σ1, …, σn+2) is an Information Arc for p if

(∃<τi: i = 0, …, n >)[ τi(σ1+i) = σ2+i &
(∃x∈X) (∃ax∈αx)[ In(x, p, σ1, ax) & τ0 = ax &
~IEP(σ1, p) &
IEP(σ2+n, p) &
(~Ins(ax, p, σ1) ⇒ ~IEP(σ2+n, p)) ]]

» An information arc for a proposition is a sequence of states of affairs produced by state transformations of an information insertion point at which that proposition has been inserted that ends in an information extraction point for it.

  • Write IA(σ, p)
  • Note that n = 0 is possible, in which case we can talk of a Null Information Arc for p.

Define an Information Channel as a state of affairs χ, such that

(∃P⊂ℙ) (∀p∈P) (∃σ) [ IA(σ, p) &
(∀σi∈σ) [χ ⊂ σi & (~(χ ⊂ σi) ⇒ ~IIP(σi, p) & ~IEP(σi, p)) ]]

» An information channel is a stable state of affairs that facilitates information arcs for a class of propositions as items of information.

  • Write IC(χ)
  • We can call P⊂ℙ that appears in the definition above the Matter of χ, and write that M(χ)=P

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Information

February 13, 2026 – 4:13 pm

σ = {σi: i ∈ ℕ, si ∈ ℙ, σi is a partial description of the way the world is} where

h:Σ → ℙ

(∀p ∈ ℙ) [h(σ) = p ⇒ (∃S⊂σ) [h(σ\S) ≠ p]]

Q(ηx,i, qx,i) ⊃ Bx,i+1[ h(σ) ]

Bx[ p∈ω ] ⇒ Bx[ p ]

Dx[ (∃p∈ω)Bx[ p∈ω ] ⇒ Dx[ (∃p∈ω)Bx[ p ] ]

( Dx[ (∃p∈ω)Bx[ p∈ω ] ] ∈ qx,i

& Bx[ (∃p)[p∈ω] ⇒ (∀p)[h(σ)=p ⇒ p∈ω] ] ∈ qx,i

& Bx[ Add(η, h, σ) ] ∈ qx,I )

» and believes that the action η which x can perform is an adducement for h from σ

⇒ Ax(qx,i, cx,i) = η

Itσ = {p ∈ ℙ: (∃x)(∃ω)(∃h)[H(h,σ) &h(σ)=p & Bx [(∀p)[h(σ)=p ⇒ p∈ω]]]}

Irx,σ = {p ∈ ℙ: (∃ω)(∃h)(∃η∈αx) [H(h,σ) &h(σ)=p & Add(η, h, σ) &
                             Bx[(∀p)[h(σ)=p ⇒ p∈ω]]]}

IrX,σ = ∪x∈XIrx,σ

Xri,σ = {x ∈ X:i ⊂ Irx,σ }

Ivx,σ = {p ∈ ℙ: (∃ω)(∃h)(∃η∈αx) [H(h,σ) &h(σ) = p & Add(η, h, σ) &
                             Bx [(∀p)[h(σ)=p ⇒ p∈ω] & Add(η, h, σ) & η∈αx]]}

IvX,σ = ∪x∈XIvx,σ

Xvi,σ = {x ∈ X:i ⊂ Ivx,σ }

 

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Pope’s Theory of Metre in Old English

February 12, 2026 – 4:07 pm

According to Pope[1] the verses of OE poetry should be read so that one can beat time to the stresses in the same way that one can beat time to music. To emphasize this he uses musical notation to guide the reading of each syllable. He then proposes that the basic rhythmic structure of the poem is a straightforward four half-measures per verse. In A, D, and E this structure is almost explicit except that there is the possibility of anacrusis. Pope notes, however, that the anacrusis there can always be read in the time allotted to the final measure of the preceding verse.

The cases of B and C are more complex and involve the use of initial ‘rests,’ to continue the musical theme, in order to integrate the unimportant preliminary syllables into the basic rhythmic structure. The treatment differs according to the number of such syllables to be integrated. Thus:

  • 1 syllable may be treated as anacrusis or as the up-beat of the first measure after a rest. (Prefixes are always to be treated as anacrusis.)
  • 2 syllables may be anacrusis if the connection to the preceding verse is so close that they make a single phrase.
  • Otherwise, 2 or more syllables are assigned to the first measure with an initial rest – unless they are so numerous as to fill the measure, in which case no rest is required.
  • A 5th syllable may form monosyllabic anacrusis

An example of this and of Pope’s notation is given for verse 3a.

          hū\ ðā æ//þelin\\gas
      | ♪ ♪|♪♪♪  ♪ |

Many of these rests occur at the beginning of stanzas, fits, verse paragraphs or poems. This poem, notably, should commence with a rest according to Pope’s system; thus:

          Hwæt\, wē Gār//-De\\na     
      |  ♩  3 ♪|♩ ♪  ♪|

The recognition of the presence of such rests in verses which are not preceded by other verses or which follow significant pauses requires an independent time-keeping device. Since the harp is often mentioned in the poetry itself as the proper accompaniment of the poem Pope proposes that it was the harp that performed the time-keeping function.

[1] Pope, John C. ((1942) 1966) The Rhythm of Beowulf. New Haven: Yale University Press

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How to Develop an Interstellar Information Exchange

February 11, 2026 – 10:16 pm

I read an article by Matt Williams in Universe Today on von Neumann probes and the consequences of accepting the plausibility of that concept for SETI strategies. (Why Would an Alien Civilization Send Out Von Neumann Probes? Lots of Reasons, says a new Study – Universe Today.) The article is largely in response to the paper “Von Neumann probes: rational propulsion interstellar transfer timing,” by Greg Matloff recently published in the International Journal of Astrobiology. In that paper Matloff reviews some of the reasons that an advanced species might go the route of sending out Von Neumann machines.

  1. To preserve the memory of their civilisation beyond its end.
    1. And possibly to warn against the errors/dangers that have caused their demise
  2. To distribute ‘lurkers’ to await the rise of intelligent life or to monitor its progress
    1. And possibly to take actions against perceived threats from those intelligences
  3. To distribute life in the vast, dead universe
    1. Possibly as a type of colonisation,
  4. To interfere in the development of life and intelligence

Frankly none of those reasons seem to be particularly good ones, and they’re not the reasons I had read elsewhere for sending out VNMs.

  • Usually, it’s a type of exploration that can be done without the drawbacks of life support and which is self-sustaining and self-expanding. The originating intelligence only needs to wait at home and receive the ever-increasing number of reports from the increasing number of VNMs
  • Isaac Asimov proposed in one of his Foundation continued novels that VNMs had been sent out to terraform likely worlds, so that when humans followed much later, they had destinations that were worth getting to. (It was ‘unfortunate’ that in the process they eliminated any indigenous life or intelligence that already existed on those worlds, which is why the galaxy in his novels is all humans only.)
  • I proposed elsewhere that VNMs might be sent out to create an infrastructure for exploration and colonisation but that terraforming wasn’t involved – because I don’t think that planetary surfaces are the optimal sites for intelligences.

It occurred to me however, that there was another possibility, and that this might have a consequence for the types of machines out there and their capacities and how to find them and how to contact them. I propose that VNM machines might be sent out:

5. To form the backbone/infrastructure of a contact/communication/information distribution system. Something like a galactic encyclopaedia

Any intelligence eventually realises that interstellar travel is impossible for mortal creatures and useful interstellar two-way communication is very unlikely. In order to benefit from the presence of alternative intelligences an infrastructure would be needed by which their informational stores could be accessed asynchronously.

A device in the local intelligence’s neighbourhood, could do this if it were designed to be capable of receiving information (from the originating alternative intelligence,) storing it, and transmitting it to the local intelligence’s agents. An alien intelligence interested to do this would send out VNMs to play that role. The question is why any intelligence would be motivated to do so.

Consider that a more obvious mission for a probe is to receive information from an alien intelligence and to transmit that to the originating intelligence. Apart from information that can be gathered remotely – which must be limited in scope and value – the access to information from the stores of an alien intelligence generally requires the cooperation of that alien intelligence. Note that trying to access that information without cooperation is likely to be seen as hostile and would increase the likelihood of losing the device. The question here is why the alien intelligence would be motivated to cooperate.

The possibility of an exchange of information would provide the motivations for both parties in the scenarios above. The probe would gain access to the alien intelligence’s information stores in exchange for giving the alien intelligence access to the information stores of its originating intelligence. Presumably, there would be a series of steps in the probe / local intelligence communication to encourage parity of information exchange, fair dealing, honesty, and security for both parties. It would be an interesting problem to determine exactly what protocols could satisfy such criteria: that would tell us how we could expect a completely alien probe to behave.

Both local and alien intelligences are motivated to send out VNMs to play the role of information transceivers, but only if they have not already encountered a transceiver. If an intelligence encounters a transceiver, then that VNM is already active, and it would be merely redundant to send out their own VNM. An exception to this would be if the intelligence that encounters a VNM transceiver believes that it can improve on the device in some way. This is unlikely, since the VNM is likely to have been sent by an intelligence further advanced than the one that had not sent out a VNMTX.

The situation in which two VNMTXs encounter each other in a third system is a little less fraught than the situation in which a VNM locates a local intelligence directly. Protocols to establish a connection between the two would be another interesting problem. In the best case, they would recognise each other for what they are and would be able to fuse their networks. Repeated encounters with VNMs from different originators could thus eventually result in a widespread collaborating network of information exchangers.

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Sievers-Bliss

February 9, 2026 – 9:33 pm

As part of my effort to create a performance-oriented version of Beowulf, I had to look into the proposed theories of metre for Old English. I thought I might as well put the summaries of what I found here. 

From a study of old Germanic and Scandinavian poetic metres, Eduard Sievers[1] derived a podic system in which each verse was required to instantiate one of a limited number of patterns of stress. With later modifications by Alan Bliss,[2] this system has gained wide acceptance.

According to this system the stressed and unstressed syllables of a verse must fall into one of just 5 patterns.

Type A:  / x (x x x x) / x
Type B:   (x x x x) x / x (x) /
Type C:   (x x x x x) x / / x
Type D:  / (x x x) / \ x
Type E:   / \ x (x) /

The parentheses indicate the number of unstressed syllables which optionally occur at that position.

The verses in a line may be any combination of verse types.

Notes:

  1. Anacrusis may occur in lines of type A or D, thus:

Type A+: (x x) | / x (x x x x) / x
Type D+: (x x) | / (x x x) / \ x

  1. The stress pattern of a verse may occasionally be augmented by what seems to be half of another Type added to its end. Such half-lines are called hypermetric verses and often come in groups of three.

Just because this system creates such a complete typology of line forms and is almost universally used even by those who are not committed to it as a metrical theory we shall include here a description of the metrical sub-types that the system recognises. Note that for brevity the optional unstressed syllables are left out of the descriptions of each type and subtype

A             / x / x
A1           Alliteration on the 1st lift or (for the on-verse) on both
A2          \ replaces x in either foot or both; often has double alliteration
A2a         / \ / x     \ in 1st dip, which may be a resolved syllable
A2b         / x / \     \ in 2nd dip, which may be a resolved syllable
A2ab       / \ / \     \ in both dips, which may be resolved syllables
A3           Alliteration only on 2nd lift
A3b         / x / \     \ in 2nd dip, which may be a resolved syllable     

B             x / x /
B1           2nd dip has one syllable
B2          2nd dip has two syllables
B3          Alliteration only on 2nd lift

C            x / / x
C1          1st lift is not resolved
C2         1st lift is resolved
C3         2nd lift is short

D            / / \ x     Double alliteration is required and so this is always an on-verse
D1          \ is in 3rd position and long
D2          \ is in 3rd position and short
D3          2nd lift is short and \ is long
D4          / / x \    
D*          Called Expanded as it has an extra syllable or two after the 1st lift
D*1        \ is in 3rd (equivalent) position and long
D*2        \ is in 3rd (equivalent) position and short
D*4        / / x \    

E             / \ x /     Sievers’ sub-types here are no longer generally distinguished as such

Critics attack this system for being more complex than the source material would seem to justify and also for not giving any explanation for why the verses have to go into just those 5 patterns. Moreover, it is observed that there are grammatically and semantically correct lines of OE poetry which do not fit the scheme. The typical response to this is to assume that such lines are the result of scribal errors and to seek to correct them, but this is felt by some critics to be presumptuous: a theory should be made to fit the data, not the other way around.

[1] Sievers, Eduard (1893) Altgermanische Metrik. Sammlung Kurzer Grammatiken Germanischer Dialekte, Ergänzungsreihe, 2. Halle: Niemeyer

[2] Bliss, Alan Joseph (1958) The Metre of ‘Beowulf.’ Oxford: Blackwell; (1962) Introduction to Old English Metre. Oxford: Blackwell

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The Question of the ‘Legitimacy’ of Chinese Philosophy

February 7, 2026 – 10:48 am

Western philosophical circles have for a long time refused to regard Chinese philosophy as a philosophy and have only studied it as a sort of thought or religion, precisely because they maintain that the questions of Western philosophy were not discussed in Chinese philosophy or not discussed in the Western manner. Regarding the questions of Western philosophy as the questions of “philosophy,” or understanding philosophy merely as a branch of learning concerned with exposition and justification (lun zheng zhixue), and thereupon determining whether or not a non-Western culture possesses a philosophy, is, in essence, a manifestation of Western cultural chauvinism. (Chen Lai (2005) ‘An Elementary Discussion of a Number of Questions Concerning “Chinese Philosophy”,’ Contemporary Chinese Thought, 37:1, 34-42, p. 40)

“It definitely is due to racism,” he says. “When Europeans first encountered philosophy in China and India, they immediately recognised it as philosophical and were fascinated by it.” Beginning with Kant, he says, Western philosophers “started to assume that people in India and China were racially incapable of doing philosophy. “Kant’s claims about white racial superiority were accepted by generations of students, and Kant’s own disciples rewrote the philosophy textbooks.” (Racist attitudes ‘whitewashed’ modern philosophy. What can be done to change it? – ABC News)

Non-European philosophical traditions offer distinctive solutions to problems discussed within European and American philosophy, raise or frame problems not addressed in the American and European tradition, or emphasize and discuss more deeply philosophical problems that are marginalized in Anglo-European philosophy. There are no comparable differences in how mathematics or physics are practiced in other contemporary cultures. (Garfield, J. and B. W. van Norden, ‘If Philosophy Won’t Diversify …’ The Stone, 11/5/2016)

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Sketch of the Sufi Path

February 6, 2026 – 3:26 pm

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Feng Youlan’s Revisions

January 2, 2022 – 8:56 pm

Feng’s own philosophical positions were presented in a series of works beginning with the Xin Lixue (The New Study of Principles) which proposed a reform of the Lixue branch of Neoconfucianism associated with the names of the Song dynasty scholars Cheng Yi and Zhu Xi. (It is for that reason also called the Cheng-Zhu School.) His reform involved the analysis of certain terms important in both Neoconfucianism and Taoism according to the methods and standards of Western philosophy. He claimed, in fact, that each of these terms named an idea that was the logical consequence of the statement that ‘something exists.’ Having derived these concepts in a rationally acceptable way he could then reconstruct the core philosophy with regard to these new understandings. We shall look at the reconstruction of just two of these terms.

Li.

You might recall that li was proposed by Cheng Yi as the cause of qi condensing into a flower in one case and leaves in another. Qi condenses into a flower ‘because’ it is ‘informed’ by the li of a flower. Zhu Xi added that the li of a flower also gives the definition, standard, or norm of that flower – how the flower ought to be – rather in the way that a mould can be taken as defining the shape of the object cast. A difficulty with all this, however, is that proposing li as an ad hoc solution to the problem of a causal gap tells you nothing about the nature of that li or whether it does exist, and arguments derived from Hume – with which Feng would have been familiar – show that we could not derive the claimed normative role from its supposed positive causal nature.

In Feng’s view, li are the ideal reality that we implicitly hypothesize or the abstractions that we implicitly create when we accept that general terms name things that exist in the real world. Because we accept that there are flowers, there must be the class of things called ‘flowers;’ there must be a characterization of that class; there must be an ideal of ‘flowers.’ In this case li is a purely formal concept and has no necessary content. The discovery of its content – if in fact there is any– is a task for empirical research. “It is the business of science to find out the content of the individual Li, using the scientific and pragmatic method.”[1] The cause of the condensation of qi into that particular instantiation of the li is equally a matter for science. Such research then takes the place of Zhu Xi’s gewu or ‘investigation of things, an important praxis of that school, whose purpose was rather to use deep contemplation on the assumed content of the li of some experienced thing to reach a sudden enlightenment concerning the content of all li.

Qi.

The daoxue generally accepted the view of Zhang Zai according to whom qi, originally just meaning ‘breath’ and signifying one of several kinds of influence, was taken to be the material force – the motive towards materiality of the universe – which produces the two subsidiary principles or tendencies of yin and yang which, in their turn, influence qi. Under the influence of yang qi has the property of Movement and constitutes Actuality: it condenses to form the things in the world. Under the influence of yin it has the property of Quiescence and constitutes Potentiality: when it dissipates things in the world go out of existence. There are many difficulties with this view too: For example, how are yin, yang, and qi causally related, is the circularity involved vicious, and what is the character of this qi beyond its mere relationship with yin and yang?

According to Feng, qi is no more than the logical consequence of the claim that a principle can be actualiised in matter. If that is the case, he argues, then there must be a potential for materialization and a material force to bring this about. Understood in this way – if this way can be understood – qi is no more contentful as a concept than li and remains an empty form waiting for empirical investigation to complete it. In particular, it implies nothing at all about whatever relationships may exist amongst itself and yin and yang which are, as with the case of li, relationships to be explored empirically.

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