The Blushing Liar
Philosophia 21/2, 252-266.
Franca D’Agostini
University of Milan
franca.dagostini@unimi.it
Elena Ficara
Paderborn University
elena.ficara@upb.de
Abstract - Suppose a person blushes iff what she says is false and she says ‘I am
blushing’. If she blushes, she doesn’t, and if she doesn’t, she does. This Blushing
Liar (BL) is a new paradox, similar in some respects to the Pinocchio Paradox (PP):
Pinocchio’s nose grows iff he says some falsity, and he says ‘my nose is growing’.
Both paradoxes involve physical properties, and both, supposedly, confirm the
existence of metaphysical dialetheias (see Eldridge-Smith 2011). In the paper, we
note first that while PP relies on the rather implausible scenario of a wooden puppet
whose nose grows iff he is lying, so it is debunked by the objection of fictionality
(raised by Beall 2012), BL is more plausible. Many people in our world blush, and it
is not difficult to imagine someone whose saying is causally related to blushing in a
similar way. A second question is whether blushing can be directly connected to
falsity, without deliberate conscience, on the part of the speaker, of saying a false
statement. So we explore the consequences of intending ‘I am blushing’ as a ‘lie’, in
the strict meaning of the term, and we claim there is no substantial difference, but
for the fact that the paradoxical effect is even more plausible. Third, we check
whether BL and PP do really release metaphysical dialetheias, and we argue they do
not: they lack the fundamental requisite of Liar-like contradictions, i.e. the
stratification of properties.
Liar paradoxes – Metaphysical dialetheias – Fictional Truth – Lie
1
Introduction
Each time Victoria says some falsity she blushes. But she only blushes if what she says is
false. Suppose now Victoria says:
V = ‘I am blushing’
If she blushes, then she cannot blush (as she does not say falsity), but if she does not, then
she must (as what she says is false): so Victoria blushes iff she does not.
This Blushing Liar (BL)1 is a Liar-like paradox very similar to the one devised by
Veronique Eldridge-Smith, presented by her father, Peter Eldridge-Smith (Eldridge-Smith
and Eldridge-Smith 2010), and commonly known as Pinocchio paradox (PP). Stated that
Pinocchio’s nose grows if and only if Pinocchio says some falsity, suppose he says:
P = ‘My nose is growing’
The nose is growing iff it is not growing. The two sentences V and P behave (or are
supposed to behave) like the sentence L = ‘L is false’: if L is false then is true, and if it is
true, is false.2
Our proposal in this paper is to present BL as a new and interesting version of the
Liar, similar to PP, but with some distinctive aspects that deserve to be noted. More
specifically, both paradoxes seem to be good cases for enlightening three issues of a
metaphysical analysis of paradoxes.3 First, Victoria as well as Pinocchio are fictional
characters, so there is the problem of establishing the ontological plausibility of a
paradoxical (more or less fictional) case. We define ‘ontological plausibility’ in terms of
closeness or similarity to the actual world, and we note that Victoria’s possible world is in
principle more plausible than Pinocchio’s world, as many people in our world blush, and it
is not difficult to imagine a connection between talking and blushing along the postulated
lines. Second, we note that such connection is even more plausible if we assume that
Victoria blushes iff she lies, in the strict sense of asserting what she believes false. We
claim that such version of the paradox might not change the basic dialetheic interpretation,
whereby Liar-like assertions release true contradictions (Priest, 2006 and Beall, 2009).
2
Third, we reflect on whether Victoria’s asserting ‘V’ actually yields a metaphysical
dialetheia, i.e. a ‘true contradiction’, in a non-merely-semantic sense, and we claim it does
not. Rather, there are reasons to conclude these largely ‘physicalist’ versions of the Liar,
once interpreted in the light of closeness to our world, do not release metaphysical gluts.
They lack of the important property of stratification, which is typical of truth and of other
iterable predicates.
1. The plausibility of fictional paradoxes
In Eldridge-Smith’s account, PP differs from the standard Liar just in involving a physical
and non-semantic feature “having one’s nose grow is not a synonym for ‘false’”: the nose
grows because Pinocchio says something false, and this is, definitely, a metaphysical
relation (Eldridge-Smith and Eldridge-Smith 2010, 213). In this respect, Pinocchio’s case
would offer a good counter-example to semantic dialetheism (Eldridge-Smith 2011),
because in Pinocchio’s world, as soon as Pinocchio says ‘P’, his nose is expected to grow
and not grow at the same time.4
JC Beall (2012) has contended that Pinocchio’s world is a fictional world, and
fictional dialetheias are not metaphysical. He says Pinocchio’s case falls within the scope
of the operator ‘according to the story…’, so there is no genuine paradoxicality, for in the
story (like in other impossible or absurd stories), we can peacefully accept that Pinocchio’s
nose grows iff it does not grow, and so (maybe) grows and does not grow at the same time.
But the premises are implausible, and hence the most usual definition of paradox “the
apparently unacceptable conclusion of an apparently sound argument” (Sainsbury 20093,
from Quine 1962) is not satisfied. To suppose some possible worlds in which Pinocchiolike contradictions truly occur means, in Beall’s view, confounding fictionality and
possibility: “stories are free: make them as you please. Possibility is different: possibility is
independent from our creativity” (Beall 2014b, 29).
The objection may seem weak, at first. In general, as we know scientific fictions
are extremely useful, in many different respects, and thought experiments have important
heuristic and explanatory properties in philosophy. In particular, many paradoxes are
‘narrative’, i.e. involve some fiction.5 The Liar itself could be seen as a case occurring
‘according to a story’: the story of classical logic, involving Excluded Middle and naïve
truth. By appealing to similar arguments, Eldridge-Smith has opposed that the fictionality
restriction does not hold in case of PP: “why should Pinocchio’s world become impossible
3
while Epimenides’ world dialetheic, if they make their respective statements?” He claims
that there is a difference between a contradictory scenario, like the Barber’s, in which an
openly contradictory property is presupposed; and a contradictory situation created by a
consistent set of properties, closed under logically reasonable devices, such as the Tschema. Pinocchio’s paradox “is a version of the Liar: its scenario is apparently possible
[…] and it relies on the same principle of truth and the same inferences as some other
Liars” (Eldridge-Smith 2012, 752).
In fact, Beall’s objection is not completely debunked by these considerations. The
idea that fictional paradoxes are not really ‘paradoxical’, eventually, do not seem to regard
only ‘logical impossibility’. As a dialetheist, Beall does not consider a potentially
contradictory scenario a reason of implausibility. Rather, the objection is to be read as
implying that truly paradoxical properties should not simply be non-contradictory (or only
‘implicitly’ contradictory): they must also be ontologically plausible. So the question is
how we can state ontological plausibility, and whether ontological plausibility is really a
feature for true paradoxicality.
1.1. Paradoxes and degrees of plausibility
As variously stressed (see Sainsbury 20093; Lycan, 2010; Paseau, 2013) paradoxes ‘come
in degrees’: basically, degrees of ‘plausibility’, to be intended as weaker than logical
possibility. Paseau’s scale for paradoxes is explicitly focused on epistemic values, as
distinct from logical values: “it seems restrictive to stipulate that paradoxes must be beyond
logical belief […] inconsistency is no longer the key” (Paseau 2013, 18).6 So if we accept
the gradualistic account, and if we stay at the idea that paradoxes are more or less narrative,
then we ought to admit that degrees of paradoxicality/plausibility are inversely proportional
to degrees of fictionality.
The reference to fictional scenarios implies the evaluation is not only epistemic: it
is also ontological. In Sainsbury’s scale the import of ontological considerations is evident:
“paradoxes come in degrees depending on how well appearance camouflages reality”, so
stronger paradoxes – more definitely paradoxical cases – have to be more plausible insofar
as presenting ‘real’ cases. In Sainsbury’s diagnosis, a typical example of paradox at the
lowest degree (“the weak or shallow end”) is the Barber’s case, judged less paradoxical just
because the premises are ‘implausible’, and implausible just because there cannot be such a
barber, or such a village. “The story is unacceptable” (Sainsbury 20093, 1-2).
4
At the other end of the scale, Sainsbury places the Liar and similar paradoxes:
one cannot say that such cases ‘do not exist’, and “there is severe and unresolved
disagreement about how one should deal with them” (Sainsbury 20093, 2).7 In this regard,
one may assume that (more) fictional paradoxes are those that typically, and
uncontroversially, suggest what Field calls the Non-Existence Solution (Field 2008, 4-9). In
Field’s account, non-existence is given by the evidence that the predicates involved do not
have any corresponding property: stated that “’meaningful predicate’ in the technical sense
is a predicate that expresses a property […] we must rely on a theory of properties that
avoids the Russell paradox by the Non-Existence Solution to that” (Field 2008, 4-9 and 13).
1.2. Fictionality in the closest world
The Barber’s scenario is implausible, at first, because the property of ‘being a man of the
country who shaves all and only the men of the country who do not shave themselves’
releases the contradiction (the Barber’s shaving and not shaving himself). But
inconsistency cannot be enough, as such, for stating fictionality, and thus uncontroversial
non-existence, because for instance, if we are dialetheists, for instance, we accept
inconsistent worlds. If we admit, in principle, the possibility of contradictions, to state nonexistence (thus non-paradoxical fictionality) we need something else.
We propose to express ontological plausibility how it is usual in modal
metaphysics, since the seminal work of Stalnaker (1984) and Lewis (1973), i.e. in terms of
closeness, or similarity, to the actual world (Lewis 1986: 20-21). This is very intuitive.
Expressing the actual world by @, a world – a ‘scenario’, a ‘story’, or a ‘case’ – can be said
ontologically plausible inasmuch as it is close to @. Say, a world that is identical to @, but
in which this paper has been published in 2014 is closer to @ than a perfectly identical
world in which there are talking frogs, or there is no gravity, or some physical law is
randomly violated. Fictionality varies accordingly: in stories, as Beall says, you can do
what you want; but some stories are more plausible than others, and we assume they are, to
the extent that the properties involved are closer to the properties we can acknowledge as
existing in our world.
Adopting this perspective, we see that in the Barber’s case, what states his nonexistence (in the closest worlds) is not the contradiction as such, but the barber’s practical
impossibility of shaving and not shaving himself, so the impossibility of being the entity he
5
is supposed to be. To stay at what our world is like, as dialetheists, we might accept that the
Barber’s property as such violates the Law of Non-Contradiction, but we can hardly accept
that it violates practical consistency. Not by chance, a widely shared point of dialetheic
theories is the idea that there are no practical contradictions: as Priest (20062: 61) states: “a
person cannot simultaneously catch a bus and miss it”, just as they cannot “win a game of
chess and lose it.”
Now we have all we need to place PP and BL in a scale of paradoxicality.
Eldridge-Smith is right in claiming that PP should not be at the weakest level, just because
the property that Pinocchio is held to instantiate is not ‘logically impossible’ as such. So his
world gains a certain advantage on the Barber’s in terms of plausibility. However, we ought
to concede that Pinocchio’s world is not that close to our world. In Collodi’s novel,
Pinocchio is a wooden puppet who speaks and behaves like a little boy, and whose nose
grows when he lies. We have no notice of a similar puppet in our world and we can hardly
imagine that such a case might occur under the action of our laws of nature. The property G
= ‘having one’s nose grow iff saying some falsity’ is not contradictory but (relatively)
implausible.8 Not only that, non-existent properties may have some metaphysical
significance, to the extent that they contribute to describing and interpreting the actual
world.9 But this does not seem the case of G: it does not seem useful for describing our
actual reality (at least as far as the world remains as we know it); and apparently, we do not
need the hypothetical existence of such property for some scientific purpose (or it is hard to
imagine what such a purpose could be).
In BL case instead, we know people variously react to their own speaking, and
many people blush, in the widest range of occurrences. So in principle Victoria is a more
plausible character: she is a human being, sharing all sorts of properties that humans
actually have, but for the fact of blushing iff what she says is false. As blushing is a natural
property, one can even study the neuronal facts related to assertions and one’s face turning
red or pale. Indicatively, a range of neuro-semantic paradoxes can be imagined, in the line
of BL.
So we have a preliminary ‘scale of plausibility’. While we are in the condition of
stating that the Barber paradox is totally fictional, i.e. logically and ontologically
implausible, we can say that Pinocchio – as wooden puppet endowed with the property G –
is not logically but ontologically implausible, and Victoria has higher level of ontological
plausibility: her world is definitely closer to @. So stated, we would say the fictionality
6
objection is less serious for our BL, and we have a true (non-totally-fictional) Liar-like
paradox.
2. Is the Liar lying?
In the version of the stories we have presented so far, Pinocchio’s nose grows and
Victoria’s face blushes iff what they say is objectively false (or untrue), so that the causal
relation between falsity and the intended effects on face and nose is ‘magic’, i.e. purely
mechanical and arbitrary. Pinocchio’s and Victoria’s assertions seem to have the queer
causality of any magic formula. As Beall has furtherly stressed (Beall 2014b), one can
imagine all sorts of fictional connections between the truth or falsity of an uttered sentence
and one or the other physical property. We can imagine all sorts of Pinocchio-like stories,
such as, Beall suggests, “the grass grows iff Rapunzel says some falsity, and Rapunzel says
‘the grass is growing’”: but this does not make the resulting case paradoxical.
In principle, BL may present some advantage with respect to Beall’s Rapunzel (in
terms of naturalness in a closer world), as it involves the plausible changes that the act of
speaking produces to speakers’ bodies. Telling the truth or saying falsities are complex
activities, involving many emotional states, and as emotions in our world have physical
effects, the idea of binding these effects in the frame of a property, such as B = ‘blushing iff
what one says is false’, is not so implausible. But the important point is that in our world
such sort of connections are not due to falsity or truth as such but to speakers’ awareness
about what they say, namely to what speakers believe about their own statements. In our
world (and we postulate: in the closest worlds), what makes a person blush in connection
with her speaking, normally, are de se facts, de se truths, i.e. what the person thinks (knows
or believes) about what she says and her act of saying. So ‘about’ should be intended here
as regarding the content: is what I’m saying true or false?; as well as the propositional
attitude: do I believe what I’m saying?
2.1. The Liar, Pinocchio and Victoria as true liars
The original version of the Liar’s story, credited to Eubulides (and, indirectly, to
Epimenides), made explicit reference to ‘lying’: the Liar (o pseudomenos) was conceived
7
as someone who, in saying ‘I’m lying’, declares (asserts) she does not believe what she is
saying. So ‘lying’ was intended in the way that is fairly canonical nowadays, whereby a
‘lie’ is an assertion (or more in general a sort of speech act) in which the speaker does not
believe what she says.12 So ‘p’ is a lie iff a speaker asserts that p and she believes that ‘p’ is
false.13 We see now that in the notion of ‘lie’ the de se reference is clear: a liar, strictly
speaking, is a person who has some ideas about what she’s saying, and these ideas define
her saying as a lie.
The technical treatment of the Liar paradox does not need to involve what the Liar
thinks about her own assertion (about the content of it, or about her own propositional
attitude): the point is simply to state the truth value of a sentence that seems syntactically
appropriate but is resistant to normal – classical – evaluations. The paradoxical focus is on
‘L’ as such, so that ‘the Liar’ is not the speaker, but the sentence.14 Things change in case
of PP and BL, because, as suggested, their paradoxical plausibility is largely due to the
possibility of the de se connection.
As to PP, it should be noted that what Collodi wanted, in proposing the magic
principle, was making intentional falsity visible, so revealing the deceiving strategy of the
liar. The truth and falsity of what people say have no empirical evidence as such, and this
represents an unquestionable advantage for liars, as to detect lies we need indirect means.
Accordingly, the nose growing was intended to reveal Pinocchio’s attempted deception, so
exposing the lie to public reproach. In this respect, Victoria’s case is more plausible
because we tend to relate moral shame – in terms of self-contempt or fear for public
reprobation – to blushing, and not to nose growing, and this would get around the
difficulty: a ‘liar’ who blushes would be definitely more plausible and less ‘magic’ than a
person who mechanically blushes when she says something false, without any specific
awareness about her saying.
2.2. Paradoxical lying
We see now that Victoria’s case may have a higher degree of ontological plausibility if we
modify B into B* = ‘blushing iff lying’. In virtue of the property B*, Victoria’s face does
not react to facts in the world, but to what Victoria thinks or believes about them. In
Collodi’s novel, the original rule was: ‘Pinocchio’s nose grows iff he lies’, so Pinocchio
was intended having the property G* = having one's nose grow iff lying. What does it
change, of PP and BL, in the lie-versions PP* and BL*? Are they still paradoxical?
8
If the utterances ‘P’ and ‘V’ must be ‘lies’ in the canonical definition, the foreseen
effects are expected to obtain in virtue of what the asserters believe: about facts and about
themselves. And as we know, lies may fail (what the speaker says is believed false, but it
could be in fact true), so one may contend that the context of BL* and PP* is such that
there is no effect of their saying.10 If Victoria was actually blushing and Pinocchio’s nose
was growing, but they believed it was not so, the world in which they live would not
change. Thus, apparently, the reference to lying increases plausibility but at the cost of
weakening the paradox.11
In fact, this conclusion is not convincing. Our view is that there is no significant
difference, except that, as mentioned, speaking of ‘believed falsity’ implies a double selfreference, de re and de se: Victoria talks about the content of what she says (which is her
own blushing), and about her own epistemic attitude (which is what she believes about it).
Now we simply have to assume she knows the rule, she knows that she has the property B*,
so lying and blushing are for her perfectly equivalent, and in saying V = ‘I’m blushing’ she
knows she is saying ‘I’m lying’. Hence the classical Liar-like case can be easily inferred. In
the content-sensitive account, given that ‘lying’ means believing that what one’s saying is
false, in saying ‘V’ Victoria is meaning that she believes what she’s saying is false, but as
what she’s saying is that she lies, then she believes what she’s saying is true, but evidently
if she believes so, she believes she does not lie, and thus she does not lie. You get the same
bi-conditional mechanism, whereby you have that Victoria believes she lies and does not
lie at the same time. In an attitude-sensitive account, we have the same result. Victoria
believes and does not believe that she’s lying at the same time.
Now note that this epistemic uncertainty would act in some sense on Victoria’s face.
In principle, she ought to blush but cannot blush: because she says she believes and does
not believe what she is saying, and believes that what she is saying is false and true. Here is
thus the difference between BL* and BL: that in case of lying (believed falsity) the
paradoxical effects of Victoria’s utterance are not only related to her effective blushing
(which will make what she says true or false), but also to what she believes. That this
particular state of mind is such as to generate an effective, ‘real’ contradiction, is the point
that needs to be discussed. And there are reasons to doubt that Victoria’s situation actually
release a metaphysical dialetheia (also in the non-doxastic version of the story), which is
what we are going to show.15
9
3. Do PP and BL release metaphysical gluts?
What is controversial, in our view, is whether these paradoxes give rise to metaphysical
gluts, i.e. real – actual or possible – contradictions. To check this, we go back to BL and PP
(but what we say largely holds for BL* and PP*).
A metaphysical glut is some fact or state of affairs (in the world we are speaking
about) that makes a proposition of the form ‘p Ù ¬p’ true.16 As Priest writes: “if something
is true, there must be something that makes it so […] if some contradictions are true, then
the world must be such as to make this the case.”17 Now to state whether the utterances ‘V’
or ‘P’ truly release metaphysical dialetheias, we have to look at what happens in Victoria’s
and Pinocchio’s (closest) worlds, exploring whether the corresponding truthmakers of ‘V Ù
¬V ’ and ‘P Ù ¬P’ might obtain or not.
3.1. The Liar’s world
It is advisable to compare the two worlds with the world WL in which the Liar utters the
statement: L = ‘‘L’ is false’. So we will have three worlds, corresponding to the three
scenarios: Victoria’s world (WV), Pinocchio’s world (WP) and the standard Liar’s world
(WL), where the three fictional characters, respectively, assert ‘V’, ‘P’ and ‘L’. The point is
to state what happens in the three worlds after the three speech acts.
According to the dialetheic picture, in WL we would have:
(1L) the Liar’s utterance ‘L’
(2L) the bi-conditional state L « ¬L18
(3L) the contradiction L Ù ¬L
(That we are entitled to admit bi-conditional (or even conditional) states of affairs is
arguable: for now, and for charity, let’s assume we are.)
Now we can easily see that the only ‘fact’ uncontroversially occurring in WL is
(1L). For one thing, if in the actual world a person says ‘what I’m saying is false’ (or ‘I’m
lying’) she can go on saying this without any consequence; the passage to (2L), and thus
the difficulty, only appears if you ask whether what she is saying is true or not.19 The
sentence-fact, i.e. the Liar’s utterance, has no causal effect; you cannot move on to the
Inclosure Schema (2L) without adopting a semantic ascent, or some second order attitude of
10
whatever kind. Which means that to have the bi-conditional contradiction the naïve theory
of truth, or diagonalization, or some reflexive action are required.
As to the move from (2L) to (3L), it normally requires the Excluded Middle: given
Inclosure and L Ú ¬L, we get L Ù ¬L from L, and L Ù ¬L from ¬L, and hence
unquestionably: L Ù ¬L. Now it is hard to believe that the Excluded Middle (otherwise a
controversial principle) is a metaphysical law, in some way comparable to the laws
occurring in the actual – natural – world.20 So if WL is the closest world, and we assume a
basic truthmaker view, we conclude that (2L) and (3L) are not real facts, they do not belong
to the world’s outfit, as the property involved is ‘being true’, a semantical property, which
supervenes on being, and the law whereby the Liar’s sentence releases a contradiction has a
semantic and not metaphysical power. The two states (2L) and (3L), jointly or separately,
are due to second-order or inferential and not causal process, at least they need the reflexive
intervention of the concept of truth. This simply confirms that the Liar’s contradiction is
purely semantic, which is not controversial in principle.
3.2. Victoria’s and Pinocchio’s quasi-normal worlds
Moving to Victoria and Pinocchio, we have implicitly assumed until now that in their
worlds some Liar-like situation would occur, with the only difference that the properties
involved are of physical nature. Thus, in the world Wp in which Pinocchio’s nose behaves
in the way figured out by Collodi and Pinocchio utters ‘P’, there would be three
consecutive states of affairs:
(1P) Pinocchio’s utterance ‘P’ (Pinocchio says ‘my nose is growing’)
(2P) the bi-conditional state of affairs P « ¬P (the nose grows iff it does not
grow)
(3P) the contradiction P Ù ¬P (the nose grows and does not grow).
Accordingly, in the world WV in which Victoria blushes iff she lies, and she utters ‘V’, we
would have:
(1V) Victoria’s utterance ‘V’ (Victoria says ‘I am blushing’)
(2V) the bi-conditional V « ¬V (she blushes iff she does not)
(3V) the contradiction V Ù ¬V (she blushes and she does not).
11
Is this account legitimate? We assume that the utterances of the first steps occur in both
worlds, so what we have to check is whether the subsequent states of affairs positively
obtain, as metaphysical and not purely semantic facts. While in WL the states (2L) and (3L)
are due to semantic processes, here we will have that (as Eldridge-Smith stresses)
Pinocchio’s and Victoria’s statements ought to produce some effective, non-semantic, fact.
The point is to state whether this ‘fact’ will have the form of (2) and (3) (so confirming the
dialetheic picture), or will not.
As the two worlds are intended to be the closest to ours, important empirical
conditions may modify the judgement.21 We are interested in the metaphysical plausibility
of the dialetheic interpretation, so we can partially avoid the details of an empirical line of
analysis, but we have to maintain, as preliminary conditions, that Victoria and Pinocchio
say ‘V’ and ‘P’, and they do (and did) not say anything else.
Once assumed the occurrence of (1P) and (1V) in the two worlds, at first there is no
compelling principle that leads us to accept the further passages. Suppose you favour the
idea that ‘P’ and ‘V’ are ungrounded, and more specifically they are ‘failed sentences’:
they fail their assertive aim.22 In this case, Pinocchio and Victoria do not say anything that
could be true or false, hence (as they did not say anything else) there would not be any
truthmaker for ‘V’ or ‘P’ and for ‘not V’ or ‘not P’. In this line of reasoning, you conclude
that nothing happens in WP and WV: no metaphysical glut.
However, we see that this gap-strategy fails: if nothing happens at all, then the two
sentences become false. Victoria is saying she is blushing but she’s not blushing, Pinocchio
says his nose is growing but the nose does not grow; they both say something false. Now
the mechanism will be activated: as ‘V’ and ‘P’ are falsities, their being uttered in WV and
WP is held to produce the due effects (blushing and growing, respectively). But in the very
moment in which Victoria’s face begins to blush and Pinocchio’s nose begins to grow, their
sentences will become true, which would possibly block the process: Victoria would stop
blushing, and Pinocchio’s nose would stop growing, and if it is so, then again the
mechanism is to be activated, and the process begins again…
In fact, Collodi does not specify duration and intensity of the nose growing. And
we do not know the exact nature of Victoria’s blushing (as she is fictional character too).
But if WP and WV are the closest worlds, then we are entitled to suppose that the situations
brought about by the two utterances is in some way describable by the bi-conditional
contradictions P « ¬P and V « ¬V. More generally, some passage from (1) to (2) in both
12
worlds would plausibly obtain, and we can also accept that such passage would be
somehow natural, as produced by the power of Pinocchio’s and Victoria’s internal
dispositions, informed by the properties G and B. So an interesting feature of PP and BL
with respect to the standard Liar is that while the Liar’s utterance does not produce any
metaphysical effect (as suggested, the Liar can go on saying she’s not telling the truth
without any consequence), and to have the bi-conditional mechanism we need to apply the
naïve theory of truth (or diagonalize the truth predicate, or reason about whether what is
said is true or not), in case of PP and BL no strategy of this sort is needed. That some effect
can be brought about in BL without the T-schema (which is a point of Eldridge-Smith
2018) is also clear as soon as we confront this simple version of the paradox:
1 for any ‘j’ (said by Victoria), Victoria blushes iff not j 23
2 Victoria says ‘V’ = ‘Victoria blushes’
3 Victoria blushes iff not V
("E from 1)
4 Victoria blushes iff Victoria does not (=E from 2,3).
All this stated, we may accept, at least by analogy, that a situation correctly captured by ‘P
iff not P’ and ‘V iff not V ’ would positively occur in WP and WV.
But still, the further passage, from (2) to (3), remains unjustified. Even if we
assume that the analogical picture of Pinocchio’s and Victoria’s case in bi-conditional
terms is indicatively appropriate, as something of this kind plausibly occurs in the closest
worlds, this does not seem enough for saying that we are facing a real glut. As suggested, a
metaphysical dialetheia is a state of affairs (positively occurring in some actual or possible
world) that makes some proposition of the form ‘p and not p’ true. Assuming, for sake of
the dialetheic view, that the state descriptions ‘V iff not V’ and ‘P iff not P’ correctly
express the alternate blushing-and-not blushing of Victoria’s face and the growing-and-not
growing of Pinocchio’s nose, we infer ‘V Ù ¬V’, and ‘P Ù ¬P’, respectively, only on the
basis of the EM (as seen: we get V Ù ¬V from V, and V Ù ¬V from ¬V, and hence
unquestionably: V Ù ¬V). But there is no causal action involved, and in no way the state
description in terms of the Inclosure Schema authorizes us to conclude that the intended
glut actually obtains.24
The same argument may be constructed considering the stratification of properties
occurring in the Liar’s case. Contradictory stratifications, such as T(T¬L) (claimed truth of
13
what is claimed false) are typically due to predicates that are meaningful as they express
properties that allow for self-predication (or diagonalization or iteration). Pinocchio’s and
Victoria’s properties G and B differ from the typical properties involved in Liar-like
paradoxes in that G and B do not admit of any stratification. While the Liar’s assertion can
be seen as true and false as claiming the truth of what is claimed false, there is no case of
‘growing of non-growing’ or ‘blushing of non-blushing’ in Pinocchio’s and Victoria’s
world. We may suppose that if Victoria begins to blush just after saying ‘V’, then she must
stop blushing, but then if she stops, she must begin again, or possibly: she ought to blush
and turn pale, and again recursively blushing and turning pale. But this would be a temporal
process, hardly interpretable as a dialetheic state of affairs.25
In a word, ‘V Ù ¬V’ and ‘P Ù ¬P’ do not seem adequate state descriptions of what
happens in Victoria’s and Pinocchio’s world. We can imagine a variety of possible
‘explosive’ cases, occurring at molecular level, as consequences of P iff not P and V iff not
V, but we can hardly imagine the truthmaker of a dialetheia. To get this, we need EM, so
the intervention of a logical law that is hardly interpretable as a metaphysical principle. Or
at least we need a stratification of properties that is hardly adaptable to empirical givens.
We conclude thus that the properties involved in PP and BL (and maybe in
paradoxes of the same family) do not release genuine metaphysical gluts. Not because they
are purely semantic, as in fact they involve physical actions and events, but because the
events occurring in Pinocchio’s or Victoria’s worlds are hardly comparable to truthmakers
for some instance of ‘a Ù ¬a’.
The metaphysics that would correctly explore the scenarios of these paradoxes
may contemplate quasi-normal worlds, in which some bi-conditional contradictory facts
may occur, even if their conjunctive equivalents do not obtain. But the analysis of such
hypothesis exceeds the aims of this paper. If it is true that paradoxes are worth to be studied
because they ‘teach’ us something, then we may say that BL teaches us something about
logical and physical laws, semantic and metaphysical properties.
Notes
1. Viktoria Schneider, one of our students, has suggested the idea. We thank her for this
insight: BL is to be credited to her.
2. As in principle we move in a classical scenario, we assume exclusion and exhaustion,
so that falsity and untruth are equivalent.
14
3. Other issues have been treated in the literature about PP. The effective occurring of
Pinocchio’s utterance in a temporal system is explored by Gams, Černčič and Montanari
(2016), who note: ‘as with most logic paradoxes when faced with real life [PP] turns out valid
for only a short period of time’ (365). Luna (2016) has developed a physicalist interpretation
of PP, to the effect that assuming mental states as supervening on bodily states leads to the
idea that ‘P’ is a paradoxical and non-paradoxical sentence.
4. Eldridge-Smith also holds that PP is a counter-example to Tarski’s aetiology of
paradoxes (Eldridge-Smith and Eldridge-Smith 2010), whereby paradoxes arise from the use
of semantic predicates. In fact, this point is prima facie arguable. As we will specify later (§
3.2), there are reasons to believe that Liar-like contradictions do need special predicates,
which are not only ‘semantic’, but at least have the special iterability of truth.
5. See Olin (2003, 9-14) for preliminary ideas about ‘narrative’ paradoxes.
6. In fact, Paseau does not work with Sainsbury’s definition of ‘paradox’, and follows
Lycan (2010), but this does not imply any significant change to the gradualistic account, for
our needs.
7. We leave aside now the question of the different values interacting in a scale of
paradoxicality: one of them is surely the more or less ‘serious’ level of disagreement.
8. It is a ‘free lunch’, ontologically speaking (Armstrong 2010: 90). Accepting (with
Lewis) that similarity is to be interpreted in Armstrong’s terms, as ‘sharing of properties’, as
any complex predicate as such can be intended to express a property made of a cluster of
sub-properties, we see that the property G = ‘having one’s nose grow iff what one says is
false (or untrue)’ shares some (if not many) sub-properties with Pinocchio’s counterparts
actually existing in our world, but it supervenes on them in a way that has no metaphysical
impact (the property has no instantiated counterparts in the closest worlds).
9. Typically, ‘being true’: you can concede that truth supervenes on being, so it is not a
natural property, but you must acknowledge it is a grounding and unavoidable resource,
stated its paramount role in human knowledge (and life). This is what locates the Liar at the
highest levels in the paradoxical scale, and discourages any Non-Existence strategy, as
renouncing truth is technically impossible (ultimately, ‘truth’ is an-elenctic concept).
10. A similar objection has been raised to BL by two anonymous referees: we thank them
for encouraging our reflection on this theme.
11. One could admit that Victoria blushes and Pinocchio’s nose grows in case of
successful lying, i.e. when they know that what they say is actually false. We would say that
the due effect appears when Victoria says ‘V’ while she is not blushing: so she must blush
15
because what she says is false (and she knows it is so), but in blushing, she would make her
assertion true, so she cannot blush; and thus she must and cannot blush at the same time.
12. In fact, there is a variety of definitions, we say this one is ‘fairly canonical’ as it is
basically endorsed by Mahon 2016. It has been launched by Carson (2006 and 2010) and
Sorensen (2007).
13. The third clause: “the speaker wants to deceive someone by saying that p,” was
sometimes included in traditional definitions; it is generally omitted nowadays, because it is
assumed that there are different sorts of ‘non-deceptive lies’. This omission has been
discussed (see Lackey, 2013), but we can concede that if Pinocchio and Victoria are intended
to lie in saying ‘P’ and ‘V’, they do not have deceptive intention (if not else, because both
must be aware of the objective effects of their lying).
14. Some reference to the Liar ‘as a liar’ is to be found in Eldridge-Smith (2004). The
import of mental states is at the basis of the AI approach of Luna (2016).
15. In case of PP, see Luna (2016) for details about Pinocchio’s ‘states of mind’.
16. In the official definition, a ‘dialetheia’ is a proposition that is true and whose negation
is true too, so it bears an overlapping of truth and falsity, which would imply a falsetruthmaker and true-falsemaker. Such hypothesis, in our judgement, is less plausible than the
idea of a single conjunctive truthmaker for ‘p Ù ¬p’, without truth-distribution (see
D’Agostini, 2014).
17. Priest (20062, 299). Armstrong found the possibility of contradictory truthmakers
unconvincing (see Armstrong, 2004: 108); the realistic involvement of dialetheism has been
variously explored and discussed (see Mares 2004; Priest 2006: 299-302; D’Agostini, 2014),
but we assume for sake of argument that there might be contradictory facts, i.e. metaphysical
dialetheias.
18. This corresponds to Priest’s account, whereby the Liar instantiates the Inclosure
Schema (1995). One may draw the contradiction without Inclosure (see Beall 2014a and
Beall, Glanzberg, Ripley 2016), but the classical bi-conditional account is epistemically and
metaphysically expressive, so it is especially clarifying for our discourse (see § 2.2).
19. Which may justify the medieval idea of cassatio, intended as an ignore-tactic: leave
the Liar’s sentence to itself (see Goldstein, 2006).
20. See on this Armstrong (2010, 88-92).
21. Some aspects and consequences of PP in this regard are explored by Gams, Černčič,
Montanari (2016), and by Luna (2016).
16
22. A similar strategy has been proposed by Goldstein for the Liar and other paradoxes
(2000 and 2006).
23. We use ‘j’ as variable for propositions, and ‘j’ (with quotation marks) as the
proposition made true by the fact j (without quotation marks).
24. Otherwise, the idea that one can accept a « ¬a without conceding a Ù ¬a has been
advanced in various ways. Interestingly, Hegel’s theory of contradictions can be interpreted
in these terms, but not properly in virtue of some failure of the EM, rather, grace to a specific
interpretation of the consequentia mirabilis: see Ficara (2018).
25. We have examined at length the lack of stratification in case of BL in <Authors>
(2016), where we give some further details. See also (for PP) D’Agostini (2014). EldridgeSmith (2018) thinks that the absence of stratification makes of PP and BL good examples for
debunking hierarchical approaches. Now we think that yes, PP and BL do not allow for
distinct predicative levels, so ‘hierarchies’ strictly speaking, but in our diagnosis, to arrive at
the dialetheic state the intervention of truth (with its special feature of iterability) is required
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