Circular Definitions, Arguments, and Explanations

In the course of our discursive operations we often encounter circularity.  Clarity will be served if we distinguish different types of circularity.  I count three types.  We could label them definitional, argumentative, and explanatory.

A.  The life of the mind often includes the framing of definitions.  Now one constraint on a good definition is that it not be circular.  A circular definition is one in which the term to be defined (the definiendum) or a cognate thereof occurs in the defining term (the definiens).  'A triangle is a plane figure having a triangular shape,' though plainly true, is circular.  'The extension of a term is the set of items to which the term applies' is an example of a non-circular definition. 

B.  Sometimes we argue.  We attempt to support a proposition p by adducing other propositions as reasons for accepting p.  Now one constraint on a good argument is that it not be circular.  A circular argument in is one in which the conclusion appears among the premises, sometimes nakedly, other times clothed for decency's sake  in different verbal dress.  Supply your own examples.

C.  Sometimes we explain.  What is it for an individual x to exist?  Suppose you say that for x to exist is for some property to be instantiated.  One variation on this theme is to say that for Socrates to exist is for the haecceity property Socrateity to be instantiated.  This counts as a metaphysical explanation, and a circular one to boot.  For if Socrateity is instantiated, then it is is instantiated by Socrates who must exist to stand in the instantiation relation.  The account moves in a circle, an explanatory circle of embarrassingly short diameter.

Suppose someone says that for x to exist is for x to be identical to something or other.  They could mean this merely as an equivalence, in which case I have no objection.  But if they are shooting for a explanation of existence in terms of identity-with-something-or-other, then they move in an explanatory circle. For if x exists in virtue of its identity with some y, then y must exist, and you have moved in an explanatory circle.

Some philosophers argue that philosophers ought not be in the business of explanation.  I beg to differ.  But that is a large metaphilosophical topic unto itself.

9/11 Fifteen Years After

And the nation's borders are still not secure.

The morning of 9/11 was a beautiful, dry Arizona morning.  Back from a hard run, I flipped on the TV while doing some cool-down exercises only to see one of the planes crash into one of the towers.  I knew right away what was going on.

I said to my wife, "Well, two good things will come of this: Gary Condit will be out of the news forever, and finally something will be done about our porous southern border."

I was right about the first, but not about the second.

Do you remember Gary Condit, the California congressmann?  Succumbing as so many do to the fire down below, Condit initiated an extramarital affair with the federal intern, Chandra Levy.  When Levy was found murdered, Condit's link to Levy proved his undoing.  The cable shows were awash with the Condit-Levy affair that summer of 2001.  9/11 put an end to the soap opera.

But it didn't do  much for the security of the southern border.

We have one last chance,and his name is Donald Trump. 

Lies, Truth, Narratives, and Hillary

Hillary Clinton we now know to be a liar beyond any shadow of a reasonable doubt.  A liar is one who habitually makes false statements with the intention of deceiving her audience.  This definition, however, presupposes the distinction between true and false statements.  Aphoristically:  no truth, no lies.  Hillary cannot be a liar unless there is truth.  But maybe there is no truth, only narratives.  Here, perhaps, is a way to defend Hillary.  Perhaps the outrageous things she says are merely parts of her narrative.  So consider:

N. There is no truth; there are only narratives.

It follows that (N) itself is only a narrative, or part of one.  For if there is no truth, then (N) cannot be true.  Is this a problem?  I should think so.  Suppose you want to persuade me to accept (N).  How will you proceed?  You can't say I ought to accept (N) because it is true.  Will you say that I ought to accept (N) because it is 'empowering'?   But it cannot BE empowering unless it is TRUE that it is empowering.  You cannot, however, invoke truth on pain of falling into inconsistency. No matter which predicate you substitute for 'empowering,' you will face the same difficulty.  If you recommend (N) on the ground that it is F, then you must say that (N) IS F, which leads right back to truth.

Being and truth are systematically connected.  The truth is the truth about what IS, and what IS is at least possibly such as to be the subject matter of truths. (A classical theist can go whole hog here and say:  necessarily, whatever IS is the subject matter of truths, and every truth is about something that IS.  But I am not assuming classical theism in this entry.)

So you can't say that (N) is empowering or conducive to winning the election or whatever; all you can say is that it is part of your narrative that (N) is empowering, or conducive . . . .  In this way you box yourself in: there is nothing you say that can BE the case; everything is a narrative or part of a narrative.  But you cannot even say that.  You cannot say that everything you say IS a narrative, only that it is part of your narrative that everything you say is a narrative.  You are sinking into some seriously deep crapola in your attempt to defend the indefensible, Hillary.

It follows from this that you cannot budge your sane opponent who holds that there is truth and that some narratives are true and others are false.  I am one of these sane people.  You cannot budge me because, according to MY narrative, there is truth and not all narratives are true.  According to my narrative, my narrative is not just a narrative.  It answers to a higher power, Truth. The only way you could budge me from my position is by appealing to truth transcendent of narrative. And that you cannot do.

So what is a poor leftist to do?  Fall into inconsistency, which is in fact what they do.  Everything is a mere narrative except when it suits them to appeal to what is the case.

It is of the essence of the contemporary Left to attempt the replacement of truth by narrative, a replacement they cannot pull off  without inconsistency.

What if the lefty embraces inconsistency?  Then, while resisting the temptation to release the safety on your 1911, you walk away, as from a block of wood.   You can't argue with a block of  wood or a shithead.  While shit has form, it lacks form supportive of rational discourse.

Kolakowski on Religion: Man Does Not Live by Reason Alone

Leszek Kolakowski has a message for New Atheists, leftists, transhumanists and any other bunch of religion bashers who think religion will wither away, be put out of business by some technological advance, or will eventually be confined to the sphere of the merely private.  The following quotations are from an interview with the philosopher conducted by Nathan Gardels entitled Man Does Not Live by Reason Alone. (HT: Karl White)  Emphasis added.  For more on Kolakowski poke around in the Kolakowski category.

 ………………………

Moreover, the rationalist predictions about religion also turned out to be wrong. I don’t expect the death of religion or the death of God. Secularization hasn’t eradicated religious needs.

[. . .]

So, far from secularization inexorably leading to the death of religion, it has instead given birth to the search for new forms of religious life. The imminent victory of the Kingdom of Reason has never materialized.

As a whole, mankind can never get rid of the need for religious self-identification: who am I, where did I come from, where do I fit in, why am I responsible, what does my life mean, how will I face death? Religion is a paramount aspect of human culture. Religious need cannot be excommunicated from culture by rationalist incantation. Man does not live by reason alone.

Gardels | The cultural catastrophe being that without a set of rules that comes from religious tradition there are no moral brakes on man, particularly on the gluttony of homo consumptus?

Kolakowski | Yes, no moral brakes. When culture loses its sacred sense, it loses all sense. With the disappearance of the sacred, which imposes limits on the perfection that can be attained by secular society, one of the most dangerous illusions of our civilization arises—the illusion that there are no limits to the changes we can undergo, that society is an endlessly flexible thing subject to the arbitrary whims of our creative capacities.

[BV Comment:  You can see this today in the nonsensical social constructivism according to which people incoherently speak of race and sex as social constructs.]

In the end, as I have written in the essay “The Revenge of the Sacred in Secular Culture,” this illusion sows disastrous despair. The modern chimera, which would grant man total freedom from tradition or all pre-existing sense, far from opening before him the perspective of divine self-creation, suspends him in a darkness where all things are regarded with equal indifference.

To be totally free from religious heritage or historical tradition is to situate oneself in a void and thus to disintegrate. The utopian faith in man’s self-inventive capabilities, the utopian hope of unlimited perfection, may be the most efficient instrument of suicide human culture has ever invented.

To reject the sacred, which means also to reject sin, imperfection and evil, is to reject our own limits. To say that evil is contingent, as Sartre did, is to say that there is no evil, and therefore that we have no need of a sense given to us by tradition, fixed and imposed on us whether we will it or not.

As you put it, there are thus no moral brakes on the will to power. In the end, the ideal of total liberation is the sanctioning of greed, force and violence, and thus of despotism, the destruction of culture and the degradation of the earth.

The only way to ensure the endurance of civilization is to ensure that there are always people who think of the price paid for every step of what we call “progress.” The order of the sacred is also a sensitivity to evil—the only system of reference that allows us to contemplate that price and forces us to ask whether it is exorbitant.

The values whose vigor is so vital to culture cannot survive without being rooted in the realm of the sacred. This is true not only of the values of which Milosz spoke —honesty and personal dignity—but others as well.

[. . .]

Gardels | At the end of the last modern century, can secular man reintroduce the sacred? Can we base ethical values on reason instead of revolution? Must personal responsibility be rooted in transcendent beliefs?

Kolakowski | It is obviously possible for individuals to keep high moral standards and be irreligious. I strongly doubt whether it is possible for civilizations. Absent religious tradition, what reason is there for a society  to respect human rights and the dignity of man? What is human dignity, scientifically speaking? A superstition?

Empirically, men are demonstrably unequal. How can we justify equality? Human rights is an unscientific idea. As Milosz says, these values are rooted in a transcendent dimension.

Gardels | It strikes me that totalitarianism of a different kind could emerge from the new global capitalist order—a totalitarianism of immediate gratification in which reason is conditional to self-interest.

What is to defend dignity and human rights from total commercialization?

Kolakowski | The absence of a transcendent dimension in secular society weakens this social contract in which each supposedly limits his or her freedom in order to live in peace with others. 

Such universalism of interest is another aspect of the modern illusion. There is no such thing as scientifically based human solidarity.

To be sure, I can convince myself that it is in my interest not to rob other people, not to rape and murder, because I can convince myself that the risk is too great. This is the Hobbesian model of solidarity: greed moderated by fear.

But social chaos stands in the shadows of such moral  anarchy. When a society adheres to moral norms for no other reason than prudence, it is extremely weak and its fabric tears at the slightest crisis. In such a society, there is no basis for personal responsibility, charity or compassion.

Now, with the ecological imperative, a new ethos of species self-preservation is being discussed. To some extent, it may be true that we are instinctively programmed for self-preservation of the species. But the history of this last modern century has certainly demonstrated that we can destroy members of our own species without great inhibitions. If there is species solidarity at some deep biological level, it hasn’t saved us from civil destruction.

Thus, we need instruments of human solidarity that are not based on our own instincts, self-interest or on force. The communist attempt to institutionalize solidarity ended in disaster.

Will Science Put Religion Out of Business? Against the Folly of Transhumanism

A correspondent writes:

Here's how I think science will eventually put religion out of business. Soon medical science is going to be able to offer serious life extension, not pie-in-the-sky soul survival or re-incarnation, but real life extension with possible rejuvenation. When science can offer and DELIVER what religion can only promise, religion is done.

1.  Religion is in the transcendence business.  The type of transcendence offered depends on the particular religion.  The highly sophisticated form of Christianity expounded by Thomas Aquinas offers the visio beata, the Beatific Vision.  In the BV — you will forgive the abbreviation — the soul does not lose its identity.  It maintains its identity, though in a transformed mode, while participating in the divine life.  Hinduism and Buddhism offer even more rarefied forms of transcendence in which the individual self is either absorbed into the eternal Atman/Brahman, thereby losing its individual identity, or extinguished altogether  by entry into Nirvana.  And there are cruder forms of transcendence, in popular forms of Christianity, in Islam, and in other faiths, in which the individual continues to exist after death  but with little or no transformation to enjoy delights that are commensurable with the ones enjoyed here below.  The crudest form, no doubt, is the popular Islamic notion of paradise as an endless sporting with 72 black-eyed virgins.  So on the one end of the spectrum: transcendence as something difficult to distinguish from utter extinction; on the other end, immortality mit Haut und Haar (to borrow a delightful phrase from Schopenhauer), "with skin and hair" in a realm of sensuous delights but without the usual negatives such as heartburn and erectile dysfunction. 

I think we can safely say that a religion that offers no form of transcendence, whether Here or Hereafter, is no religion at all.  Religion, then, is in the business of offering transcendence.

2.  I agree with my correspondent that if science can provide what religion promises, then science will put religion out  of business.  But as my crude little sketch above shows, different religions promise different things.  Now the crudest form of transcendence is physical immortality, immortality "with skin and hair."  Is it reasonable to hope that future science will give rise to a technology that will make us, or some of us, physically immortal, where 'physical' is understood as we understand it in the here and now?  I don't think so.  That would violate the Second Law of Thermodynamics according to which the entropy of an irreversible process in an isolated system increases leading in the case of the universe (which is both isolated and irreversible) to the heat death of the universe and the end of all life.  Granted, that is way off in the future.  But that is irrelevant if the claim is that physical immortality is possible by purely physical means.  And if that is not the claim, then the use of the phrase 'physical immortality' is out of place.  In a serious discussion like this word games are strictly verboten.

3.  Physical immortality is nomologically impossible, impossible given the laws of nature.  Of course, a certain amount of life extension has been achieved and it is reasonable to expect that more will be achieved. So suppose the average life expectancy of people like us gets cranked up to 130 years.  To underscore the obvious, to live to 130 is not to live forever. Suppose you have made it to 130 and are now on your death bed.  If you have any spiritual depth at all, your lament is likely to be similar to that of Jacob's: "The length of my pilgrimage  has been one hundred and thirty years; short and wretched has been my life, nor does it compare with the years my fathers lived during their pilgrimage." (Genesis 47:9) 

The important point here is that once a period of time is over, it makes no difference how long it has lasted.  It is over and done with and accessible only in the flickering and dim light of intermittent and fallible memory.  The past 'telescopes' and 'scrunches up,' the years melt into one another; the past cannot be relived.  What was distinctly lived is now all a blur.  And now death looms before you.  What does it matter that you lived 130 or 260 years? You are going to die all the same, and be forgotten, and all your works with you. After a while it will be as if you never existed.

The problem is not that our lives are short; the problem is that we are in time at all.  No matter how long a life extends it is still a life in time, a life in which the past is no longer, the future not yet, and  the present a passing away.  This problem, the problem of the transitoriness of life, cannot be solved by life extension even if, per impossibile, physical immortality were possible.  This problem of the transitoriness and vanity of life is one that religion addresses.

So my first conclusion is this.  Even if we take religion in its crudest form, as promising physical immortality, "with skin and hair," science cannot put such a crude religion out of business.  For, first of all, physical immortality is physically impossible, and second, mere life extension, even unto the age of a Methuselah, does not solve the problem of the transitoriness of life.

4.  But I have just begun to scratch the surface of the absurdities of transhumanism. No higher religion is about providing natural goodies  by supernatural means, goodies  that cannot be had by natural means.   Talk of pie-in-the-sky is but a cartoonish misrepresentation by those materialists who can only think in material terms and only believe in what they can hold in their hands. A religion such as Christianity promises a way out of the unsatisfactory predicament we find ourselves in in this life.  What makes our situation unsatisfactory is not merely our physical and mental weakness and the shortness of our lives.  It is primarily our moral defects that make our lives in this world miserable.  We lie and slander, steal and cheat, rape and murder.  We are ungrateful for what we have and filled with inordinate desire for what we don't have and wouldn't satisfy us even if we had it.  We are avaricious, gluttonous, proud, boastful and self-deceived.  It is not just that our wills are weak; our wills are perverse.  It is not just that are hearts are cold; our hearts are foul.  You say none of this applies to you?  Very well, you will end up the victim of those to whom these predicates do apply. And then your misery will be, not the misery of the evil-doer, but the misery of the victim and the slave.  You may find yourself forlorn and forsaken in a concentration camp. Suffering you can bear, but not meaningless suffering, not injustice and absurdity.

Whether or not the higher religions can deliver what they promise, what they promise first and foremost is deliverance from ignorance and delusion, salvation from meaninglessness and moral evil.  So my correspondent couldn't be more wrong.  No physical technology can do what religion tries to do.  Suppose a technology is developed that actually reverses the processes of aging and keeps us all alive indefinitely.  This is pure fantasy, of course, given the manifold contingencies of the world (nuclear and biological warfare, terrorism, natural disasters, etc.); but just suppose.  Our spiritual and moral predicament would remain as deeply fouled-up as it has always been and religion would remain in business.

5.  If, like my correspondent, you accept naturalism and scientism, then you ought to face what you take to be reality, namely, that we are all just clever animals slated to perish utterly in a few years, and not seek transcendence where it cannot be found.  Accept no substitutes!  Transhumanism is an ersatz religion.

It could be like this.  All religions are false; none can deliver what they promise.  Naturalism is true: reality is exhausted by the space-time system.  You are not unreasonable if you believe this.  But I say you are unreasonable if you think that technologies derived from the sciences of nature can deliver what religions have promised.

As long as there are human beings there will be religion.  The only way I can imagine religion withering away is if humanity allows itself to be gradually replaced by soulless robots.  But in that case it will not be that the promises of religion are fulfilled by science; it would be that no one would be around having religious needs.

Truthmaker Maximalism and The Misery of Philosophy

According to one of my aphorisms

Philosophy is magnificent in aspiration but miserable in execution.

Part of what makes philosophy a miserable subject is that none of its conclusions is conclusive.  Herewith, a little example.  But first some background.

A truthmaker maximalist is one who maintains that every truth has a truthmaker.  So it doesn't matter whether a truth is necessary or contingent, universal or particular or singular, affirmative or negative, analytic or synthetic, etc.:  it has a truth maker.  There are no exceptions.  The contrary of a truthmaker maximalist is a truthmaker nihilist:  one who maintains that no truth has a truthmaker — not because no truth is true, but because no truth needs something in the world to 'make' it true.  I incline toward truthmaker optimalism:  some but not all truths need truthmakers. But our topic is truthmaker maximalism.

Don't confuse maximalism with the thesis that every truth has its own unique, bespoke, truthmaker.  The maximalist is not committed to a 1-1 correspondence between truths and truthmakers.  Example.  On a factualist approach to truthmakers, they are facts.  So on factualism, the truthmaker of 'Al is fat' is the fact of Al's being fat.  But this fact also makes true other truths such as 'Someone is fat' and its logical entailments such as 'Someone is fat or Fred is dead.'

Now let's consider a counterexample to truthmaker maximalism.  This is from the excellent SEP entry Truthmakers by Fraser MacBride.

2.1.2 Could there be nothing rather than something?

Here's another shot across the bows, this time from [David] Lewis. Take the most encompassing negative existential of all: absolutely nothing exists. Surely this statement is possibly true. But if it were true then something would have to exist to make it true if the principle that every truth has a truth-maker is to be upheld. But then there would have to be something rather than nothing. So combining maximalism with the conviction that there could have been nothing rather than something leads to contradiction (Lewis 1998: 220, 2001: 611). So unless we already have reason to think there must be something rather than nothing—as both Armstrong (1989b: 24–5) and Lewis (1986: 73–4) think they do—maximalism is already in trouble.

Setting up the problem as an inconsistent triad:

A.It is necessarily true that: Every truth has a truthmaker.

B. It is possibly true that:  Nothing exists

C. It is not possibly true that: Nothing exists and something exists.

Since (C) is non-negotiable, either (A) or (B) must be rejected.  MacBride thinks that (B) is "surely" true, and that therefore (A) is "in trouble."   But MacBride's "surely" is surely bluster.  

It is impossible that nothing exist.  For if that had been the case, then it would have been the case, which is to say that it would have been true that nothing exists, whence it follows that there would have been something after all, namely, the truth that nothing exists.

Or think of it this way.  Had nothing at all existed, that would have been the way things are, a most definite way things are that excludes infinitely many other ways things might have been.  This way things are, had nothing existed, is something, not nothing.  So it is impossible that there might have been nothing at all.

Parmenides vindicatus est

Is the argument I just gave compelling?  No.  Philosophy is a miserable subject.

The misery of philosophy is rooted in the misery of man and the infirmity of his reason.  But we know our misery. Therein lies an indication of our greatness.  The knowledge of our ignorance and of our misery elevates us above every other sentient being.

Glenn Reynolds: Vote for Trump!

Here (emphasis added):

When Richard Nixon tried to weaponize the IRS, top officials at the Service made a stink. Under Obama, the IRS weaponized itself.

And, of course, the press is in the tank for the Democrats as usual. Bad news about Obama and Clinton has been soft-pedaled, with reporters sometimes admitting that they don’t want to help Trump.

So if the choice in 2016 is between one bad candidate and another (and it is) the question is, which one will do the least harm. And, judging by the civil service’s behavior, that’s got to be Trump. If Trump tries to target his enemies with the IRS, you can bet that he’ll get a lot of pushback — and the press, instead of explaining it away, will make a huge stink. If Trump engages in influence-peddling, or abuses secrecy laws, you can bet that, even if Trump’s appointees sit atop the DOJ or FBI, the civil service will ensure that things don’t get swept under the rug. And if Trump wants to go to war, he’ll get far more scrutiny than Hillary will get — or, in cases like her disastrous Libya invasion, has gotten.

So the message is clear. If you want good government, vote for Trump — he’s the only one who will make this whole checks-and-balances thing work.

Right you are, my man.

But more than good government is at stake.  Government itself in the American style is at stake.  We are at a tipping point.  If the destructive, corrupt, lying leftist is elected, it is all over for the USA as she was founded to be.  Despite what the bow-tied pussy-wussies say, there will be no recovery after four-to-eight more years of leftist infiltration of all our institutions and capitulation before our enemies.

Related articles

Barry Goldwater on Conservatism
Freedom of Speech and Freedom After Speech
Rachel Dolezal, the Black White Woman

Why Conservatives Should Vote for Trump, II

James Cambell, a professor of political science, writes,

Thinking Republicans should NOT SUPPORT Donald Trump, but they should reluctantly VOTE for him. On what matters most, and that is public policy, Trump is not nearly as bad as Clinton. Shout that Donald Trump is an idiot from the roof tops and into any microphone thrown in front of you–but then declare a vote for him.

The distinction between supporting and voting for a candidate is not a gimmick. There is a real difference. Support implies a positive assessment. A vote is a choice.

This is close to the view I have been maintaining over a series of posts.  But I don't think Campbell gets it exactly right.  Here is the way I see it.

Hillary must be stopped.  She is utterly corrupt as a person, as is becoming increasingly evident with every passing day, and she is in bad health to boot.  And her foreign and domestic policies are disastrous.  I cannot in good conscience abstain thereby aiding her.  So I must vote for Trump.  In doing so, I don't merely mark a ballot; I 'make a statement' and 'issue a recommendation.'  The 'statement' is not that Trump is a good candidate, but that he is better than Hillary, all things considered.  The 'recommendation' is that you ought to do as I do  if you are a conservative.

As I have already argued ad nauseam, politics is almost always about better and worse, not about Good and Bad.  Vide Political Action and the Principle of le mieux est l'ennemi du bien.

So in one sense of 'support,' I do not support Trump by voting for him:  I do not unreservedly endorse him.  I agree with Campbell that there is a real distinction we need to make.  The words in which we couch the distinction don't matter.  You don't like 'support'?  Fine.  Wise men do not quibble over words. The distinction can be put like this: to vote for a candidate is not unreservedly to endorse said candidate.

A vote is of course a choice, asCampbell says, but it is not merely a choice inasmuch as it has a certain 'content' as I have already indicated.  Marking my ballot for Trump, I express my belief that he is better than his opponent, and not merely better for me, but for the country.  I am also tacitly recommending that others do the same.

Trump's recent speeches have been outstanding. The Phoenix immigration speech was just perfect, exactly what a conservative ought to maintain (and not all that different from what Bill Clinton maintained in '95!).  So it not as if "Trump is not nearly as bad as Clinton" on policy.  He is vastly superior.  The trouble with Trump is his self-absorbed and mercurial character.  But as events are showing, it is becoming less and less clear that Trump is as bad as Hillary character-wise. He is shaping up, and she is being exposed for what she is. 

The Debate That Won’t Go Away: Do Christians and Muslims Worship the Same God?

Not again!  Yes, again.  On 5 September 2016 anno domini, in the pages of Crisis Magazine, Fr. Brandon O'Brien opined (emphasis added):

While some similarities may exist between the Christian and Muslim conceptions of God, it is certain that the Christian who prays “Our Father, Who art in Heaven” each day is not praying to the same God as the Muslim who prays “There is no god but Allah and Muhammad is his prophet.” This is because they are not worshipping the same God.

Certain!  How's that for theological chutzpah?


Muslims ChristiansThe title of the piece is "Why Christians and Muslims Worship Different Gods."  The reason  is that the Christian and Muslim conceptions of God are drastically different.  The doctrine of the Trinity is perhaps the key difference.  For normative Christians God is tri-une: one God in three divine persons, Father, Son, and Holy Spirit.  It is well-known that normative Muslims reject this trinitarian conception and hold to the radical unity of Allah.  God cannot have a son, either in heaven or on earth.  This key difference leads to the crucial difference.  For Christians, God, or rather God's Son, died on the cross (crux, crucis) for man's salvation, was resurrected, and ascended into heaven body and soul.  

So the conceptions of God in the two religions are radically different.  But how is it supposed to follow that Christians and Muslims worship numerically different Gods?  It doesn't follow!  Let me explain.

Suppose Sam's conception of the author of Das Kapital includes the false belief that the author is a Russian while Dave's conception includes the true belief that he is a German. This is consistent with there being one and same philosopher whom they have beliefs about and are referring to.  One and the same man, Karl Marx, is such that Sam has a false belief about him while Dave has a true belief about him.  

Now suppose Ali's conception of the divine being includes the false belief that said being is non-triune while Peter's conception includes the true belief that God is triune. This is consistent with there being one and same being whom they have beliefs about and are referring to.  One and the same god, God, is such that Ali has a false belief about him while Peter has a true belief about him.  

What I have just shown is that from the radically different, and indeed inconsistent, God-conceptions  one cannot validly infer that (normative) Christians and (normative) Muslims refer to and worship numerically different Gods.  For the difference in conceptions is consistent with sameness of referent.  So you can see that Fr. O'Brien has made a mistake.

But nota bene:  Difference in conceptions is also consistent with a difference in referent.  It could be that when a Christian uses 'God' he refers to something while a Muslim refers to nothing when he uses 'Allah.'   Consider God and Zeus.  Will you say that the Christian and the ancient Greek polytheist worship the same God except that the Greek has false beliefs about their common object of worship, believing as he does that Zeus is a superman who lives on a mountain top, literally hurls thunderbolts, etc.?   Or will you say that there is no one God that they worship, that the Christian worships a being that exists while the Greek worships a nonexistent object?  And if you say the latter, why not also say the same about God and Allah, namely, that there is no one being that they both worship, that the Christian worships the true God, the God that really exists, whereas Muslims worship  a God that does not exist?

In sum, difference in conceptions is logically consistent both with sameness of referent and difference of referent.

Apparently, this is difficult for some to see.  My good friend Dale Tuggy writes,

Christians and Muslims disagree about whether God has a Son, right? Then, they’re talking about the same (alleged) being. They may disagree about “who God is” in the sense of what he’s done, what attributes he has, how many “Persons” are in him, and whether Muhammad was really his Messenger,  etc. But disagreement assumes one subject-matter – here, one god.

Tuggy is saying in effect that disagreement presupposes, and thus entails, sameness of referent.

I think Tuggy is making a mistake here.  Surely disagreement about the properties of a putatively self-same x does not entail that there is in reality one and the same x under discussion, although it is logically consistent with it.

A dispute between me and Ed Feser, say, about whether our mutual acquaintance Tuggy has a son no doubt presupposes, and thus entails, that there is one and the same man whom we are talking about.  It would be absurd to maintain that there are two Tuggys, my Tuggy and Ed's, where mine has a son and Ed's does not.  It would be absurd for me to say, "I'm talking about the true Tuggy while you, Ed, are talking about a different Tuggy, one that doesn't exist. You are referencing, if not worshipping, a false Tuggy."  Why is this absurd? Because we are both acquainted with the man ('in the flesh,' by sense-perception and countless memories) and we are  arguing merely over the properties of the one and the same man  with whom we are both acquainted.  There is simply no question but that he exists and that we are both referring to him.  The dispute concerns his attributes.

But of course the situation is different with God.  We are not acquainted with God: God, unlike Tuggy, is not given to the senses.  Mystical intuition and revelation aside, we are thrown back upon our concepts of God.  And so it may be that the dispute over whether God is triune or not is not a dispute that presupposes that there is one subject-matter, but rather a dispute over whether the Christian concept of God (which includes the sub-concept triune) is instantiated or whether the Muslim concept (which does not include the subconcept  triune) is instantiated.  Note that they cannot both be instantiated by the same item. 

The point I am making is a subtle one, and you have to think hard to grasp it.  The point is that it is not at all obvious which of the following views is correct:

V1: Christian and Muslim worship the same God, even though one of them must have a false belief about God, whether it be the belief that God is unitarian or the belief that God is trinitarian.

V2: Christian and Muslim worship different Gods precisely because they have mutually exclusive conceptions of God. So it is not that one of them has a false belief about the one God they both worship; it is rather that one of them does not worship the true God at all.

The difference can be put in terms of the difference between heresy and idolatry.  If Islam is a Christian heresy, as has been maintained by G. K. Chesterton et al., then the Muslim has false beliefs about the same being about which the Christian has true beliefs.  If, on the other hand, the Muslim is an idolator, then he worships a god that does not exist, which obviously cannot be identical to the true God who does exist.

There is no easy way to decide rationally between these two views. We have to delve into the philosophy of language and ask how reference is achieved. How do linguistic expressions attach or apply to extralinguistic entities? How do words grab onto the (extralinguistic) world? In particular, how do nominal expressions work? What makes my utterance of 'Socrates' denote Socrates rather than someone or something else? What makes my use of 'God' (i) have a referent at all and (ii) have the precise referent it has? 

For the technical details see the entries collected here.

Summary 

Most of the writing on this topic is exasperatingly superficial and uninformed, even that by theologians.  Fr. O'Brien is a case in point.  He thinks the question easily resolved: you simply note the radical difference in the Christian and Muslim God-conceptions and your work is done.  Others make the opposite mistake.  They think that, of course, Christians and Muslims worship the same God either by making Tuggy's mistake above or by thinking that the considerable overlap in the two conceptions settles the issue.

My thesis is not that the one side is right or that the other side is right.  My thesis is that the question is a very difficult one that entangles us in controversial inquiries in the philosophies or mind and language.  

You might say it doesn't matter.  If Christians and Muslims worship the same God, then Muslims are heretics: they have false beliefs about the true God.  If Christians and Muslims worship different Gods, then the Muslims are idolaters: they worship a nonexistent god.  Not good either way.  This won't be acceptable to Muslims, of course, but why shouldn't a Christian say this and leave it at that? 

Why a Conservative Should Vote for Trump

Dennis Prager makes the case.  He concludes (emphasis added):

Therefore, with another four years of Democrat-left rule — meaning a nearly permanent left-wing Supreme Court and left-wing-controlled lower courts; the further erosion of federalism; an exponential growth in the power of the federal government; further leftist control of education; and the de-Americanization of America in part by effectively eliminating its borders, in part by substituting multiculturalism for American identity and in part by giving millions of illegal immigrants citizenship — America will not be America.

We conservatives who will vote for Trump understand that he is the only vehicle we have to prevent this. We recognize that though there are some fine individuals who hold left-wing views, leftism is a terminal cancer in the American bloodstream and soul. So our first and greatest principle is to destroy this cancer before it destroys us. We therefore see voting for Donald Trump as political chemotherapy needed to prevent our demise. 

How might a NeverTrump conservative  counter this line of argument?

A.  One might argue  that 4-8 years of Hillary & Co. won't make the country much worse than it is now and won't appreciably strengthen the leftist grip on our institutions.

B.  One might argue that 4-8 years of Hillary & Co. will make the country worse, but that all the damage can be undone by a succeeding Republican administration.

C.  One might argue that Trump is just too dangerous and mercurial to be trusted with the presidency.  He might, for example, start a nuclear war.  Better red than dead!

D.  One might argue that Trump and Hillary are both evil and that one must never vote for an evil candidate.  To vote for either would be like voting for Caligula or Nero, or for Stalin or Hitler.

E.  One might argue that (i) Trump cannot be trusted to do anything he promises to do, so that policy-wise there will be no real difference between a Trump and a Hillary administration, and that (ii) Trump is character-wise worse than Clinton.  Therefore one ought to either vote for Hillary or abstain.  Someone who takes this line might urge that the much-touted Great Wall of Trump is just so much hot air:  there never will be any such wall.  Trump will back off from that in the way he has backed off (quite reasonably!) from talk of the deportation of the supposed 11 million illegal aliens in our midst.  NeverTrumper David French a while back referred to Trump's wall as a "pipe dream."

At the moment I can't think of any other counterarguments.  The only one that has any merit is (E).  But it too is pretty lame.  My response is that while we KNOW what Hillary will do, and that what she will do will be disastrous, there is some chance that Trump will accomplish some of what he proposes.  There is zero chance that Hillary will do anything good for the country by conservative lights, while there is, say, a 30% chance that Trump will do 30% of what he proposes.  So I reject (i).  I also reject (ii).  Both candidates are awful, but I don't see how you could say that Trump is morally worse than Hillary.

Trump is all we've got.  Conservatives must vote for him.  (I warmly recommend that liberals vote for Jill Stein.)

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Reading Now: Gun Control in the Third Reich

Author: Stephen P. Holbrook

Subtitle: Disarming the Jews and the "Enemies of the State"

Essential reading on the eve of the disaster that is a Hillary presidency.

"Gun Control in the Third Reich, Stephen Halbrook's excellent history of gun control in Germany, shows that, motives notwithstanding, removing weapons from the general population always disarms society vis a vis its worst elements. In Germany the authorities tried to deal with the Nazi and Communist mobs that were shaking society's foundations indirectly, by disarming ordinary people. But their cowardice ended up delivering a helpless population to the Nazis' tender mercies. Halbrook's richly documented history leads Americans to ask why those among us who decry violence in our society choose to try tightening the vise on ordinary citizens' capacity to defend themselves rather than to constrain the sectors of society most responsible for the violence." —Angelo M. Codevilla, Professor Emeritus of International Relations, Boston University; author, Informing Statecraft, War: Ends and Means (with Paul Seabury), The Character of Nations, and Between the Alps and a Hard Place: Switzerland in World War II and the Rewriting of History.

"What good would private arms do against a totalitarian state? That won't remain an unanswerable rhetorical challenge for readers of Stephen Halbrook's calm, detailed scholarly book, Gun Control in the Third Reich. As Halbrook shows, Nazi leaders went to great lengths to extend the gun control laws they inherited from the Weimar Republic. They were obsessed with disarming Jews and other designated public enemies. Potential resistance was not only physically disabled. It was morally and psychologically disarmed. Evil then became irresistible in Germany, not because it was fueled by fanaticism but because shielded by fatalism." —Jeremy A. Rabkin, Professor of Law, George Mason University School of Law

"Even a defense with small arms against a tyrannical regime, if known, can galvanize public opinion which is the ultimate source of all political authority. That is why, as Halbrook authoritatively shows in Gun Control in the Third Reich, the Nazis-despite their massive military force-went out of their way to confiscate even small caliber weapons in Germany." —Donald W. Livingston, Professor of Philosophy Emeritus, Emory University

Read reviews and order at Amazon.com