Showing posts with label Greg Welty. Show all posts
Showing posts with label Greg Welty. Show all posts

Sunday, April 26, 2020

Has presuppositionalism evolved?

Has presuppositionalism evolved? By presuppositionalism I mean the Van Tilian tradition, not the Clarkian tradition–which is a different animal.

Van Til championed the transcendental argument. And think that's due in large part do his eccentric view of divine incomprehensibility (which builds paradox into his definition of divine incomprehensibility). If God is incomprehensible in Van Til's sense, then you can't argue directly for his existence. Rather, you argue that God's existence is a necessary condition for everything else. Van Til's view is similar in that respect to transcendental Thomism. 

So Van Til's argument was essentially an epistemological argument for God's existence. Transcendental arguments are epistemological arguments, to refute skepticism.

However, in the hands of Greg Welty and James Anderson, the argument has shifted to modal metaphysics. So there's been some evolution and reorientation in the argument. 

It may be the case that Kant's argument is more epistemological, in part because he doesn't have a robust theology to ground it. Kant might even be a closet atheist. And he's skeptical regarding our knowledge of the external world. So he can't say much of anything to back it up in terms of bedrock ontology. 

Although Van Til's version is partly epistemological, he tries to ground it in the metaphysics of Reformed theism. Greg Welty and James Anderson develop that neglected potential in more detail. This is also because there's been a lot of work done on modal metaphysics which wasn't on the horizon in Van Til's time. In addition, Welty was never a champion of theological paradox. And that's conspicuously missing from Bahnsen as well. 

Sunday, March 29, 2020

Theistic conceptual realism update

For those of you who take an interest in modal metaphysics:

Philosophia Christi
Vol 21 Num. 2 - Winter 2019
The Winter 2019 issue features a lead discussion centered on William Lane Craig's argument in God Over All, with contributions from Greg Welty, Peter van Inwagen, and a response by Craig. The discussion addresses issues of "divine conceptualism" and abstract objects and their implications for the nominalism-realism debate.

Greg Welty is slated to publish an updated version of  “The Conceptualist Argument,” in Colin Ruloff (ed.), Contemporary Arguments in Natural Theology (Bloomsbury Press, forthcoming). 

He had to cut it down to meet the word count, so he will publish the outtakes in journal articles. 

Wednesday, March 11, 2020

Sorting out presuppositionalism

The silly contest between Josh Rasmussen and SyeTenB demonstrates, once again, the need to do some sorting:

Regarding the YouTube interview:


There are at least three different things flying under the banner of "presuppositionalism"

1. There's the position of SyeTenB. He's a hack with a rabid internet following among a clique of pop Calvinist groupies.

2. That's not to be confused with academic versions of presuppositionalism. For instance:

Greg Welty, “The Conceptualist Argument,” in Colin Ruloff (ed.), Contemporary Arguments in Natural Theology (Bloomsbury Press, forthcoming).



3. From another angle is the presuppositionalism of Vern Poythress. For instance:


4. There are roughly two competing schools of thought that call themselves presuppositionalists:

i) One derives from Cornelius Van Til. Second-generation Van Tilians include John Frame, the late Greg Bahnsen, and Vern Poythress. We might classify James Anderson as a third-generation Van Tilian. 

However, he's been exposed to some other influences, like Plantinga and modal metaphysics.

Theistic conceptual realism belongs to a family of transcendental arguments. It's interesting how that's evolved. Kant's argument is more epistemological, in part because he doesn't have a robust theology to ground it. Kant might even be a closet atheist. And he's skeptical regarding our knowledge of the external world. So he can't say much of anything to back it up in terms of bedrock ontology. 

Although Van Til's version is partly epistemological, he tries to ground it in the metaphysics of Reformed theism.

Greg Welty and James Anderson have done a lot to embed the epistemological side of the argument in modal metaphysics. I think it's a transcendental argument with an epistemological side, but they've done more to model and detail the necessary metaphysical conditions that make it possible. 

ii) The other derives from the late Gordon Clark. Clark as an anti-empiricist. 

Clark's followers make second-order knowledge necessary for first-order knowledge. You don't know anything unless you know how you know it. They make the justification of knowledge a necessary ingredient in knowledge itself. Here are two examples:



It's important to keep these two schools of thought separate, even though they both use the same designation. When you're accused of not understanding presuppositionalism, part of the problem is that there are competing schools of thought as well as different exponents with varying views.


I don't think Josh is under any obligation to understand SyeTenB's positionbecause  there's not much there there. 

Friday, November 15, 2019

Theistic conceptual realism

Recently, Greg Welty debated Peter van Inwagen and William Lane Craig on abstract objects. That will be published in the Winter issue of Philosophia Christi. Here is Welty's title and abstract:

Title: “Do Divine Conceptualist Accounts Fail? A Response to Chapter 5 of God Over All”.

Abstract: "William Lane Craig’s God Over All argues against the kind of ‘divine conceptualism’ about abstract objects which I defend. In this conference presentation I note several points of agreement with and appreciation for Craig’s important work. I then turn to five points of critique and response pertaining to: the sovereignty-aseity intuition, the reality of false propositions, God’s having ‘inappropriate’ thoughts, propositions being purely private and incommunicable, and a consistent view of God’s own ontological commitments. I conclude by summarizing our two key differences, indicating that we may have much more in common than first appears (both theologically and metaphysically)."

In the final footnote, Welty mentions five more criticisms that weren't read out. 

In addition, Dr. Welty will be updating his arguments in Colin Ruloff (ed.), Contemporary Arguments in Natural Theology (Bloomsbury Press, forthcoming).

Wednesday, May 29, 2019

Roundup on presuppositionalism

One thing I notice when it comes assessing the merits of presuppositionalism is that lots of folks aren't picking the best examples that presuppositionalism has to offer. 

1. Van Til

One thing critics frequently fail to make allowance for is that Van Til delegated the defense of Scripture to his colleagues in the NT dept. (Ned Stonehouse) and OT dept. (E. Y. Young). He was a philosophical thinker who played to his own strength and specialty. 

2. Vern Poythress

He's the prolific polymath at WTS. Most of his books are available for free:


Many of his books have a presuppositional underpinning, but that's more explicit and pervasive on particular topics, viz.







There are a couple of limitations to his apologetic:

i) His books are generally written for a popular audience (his monograph on logic is an exception), so he holds a lot in reserve.

ii) I'd say he has a certain antipathy to philosophical theology and modal metaphysics. From his perspective, it's too rationalistic, failing to honor divine transcendence and incomprehensibility. He's a critic of univocal God-talk. Those scruples inhibit his opportunities to justify or provide detailed models of how Christian theism grounds reality. 

3. James Anderson

It's sometimes difficult to separate the work of James Anderson from Greg Welty, because they collaborate (esp. on modal metaphysics). One of his early writings combined insights from Plantinga and Van Til on Christian epistemology:


Anderson has explicated and defended theistic conceptual realism in his own writings: 


In addition to technical writing, he writes at a popular level:



4. Greg Welty

Finally, there's his sometime collaborator Greg Welty. Welty is too eclectic to be a presuppositionalist. However, his work on theistic conceptual realism is a way to cash out the transcendental argument for God. In that regard, the work of Welty and Anderson represents a shift in emphasis from epistemology to modal metaphysics in presuppositional apologetics. I may have had something to do with that. When Welty was a post-grad student at Oxford, I encouraged him to pick a thesis/dissertation topic on modal metaphysics rather than epistemology because I thought (and still think) that's more fundamental and interesting than epistemology. Representative examples include:

“Theistic Conceptual Realism,” ch. 3 of Paul Gould (ed.), Beyond the Control of God? Six Views on the Problem of God and Abstract Objects (Bloomsbury Academic, 2014).



Welty's position continues to evolve. He recently participated at this event:

Read paper: “A Response to William Lane Craig’s God Over All: Divine Aseity and the Challenge of Platonism,” at the American Philosophical Association Eastern Division 2019 Annual Meeting (January 9 th). This ‘Author Meets Critics’ session also included a response to Craig from Peter van Inwagen, and a reply to both papers by William Lane Craig.

And he has another contribution in the pipeline which I expect will continue to develop and refine theistic conceptual realism:

“The Conceptualist Argument,” in Colin Ruloff (ed.), Contemporary Arguments in Natural Theology (Bloomsbury Press, forthcoming).

In taking stock of the fortunes of presuppositionalism, the contributions of Anderson, Welty, and Poythress represent the go-to material. I'd add that Paul Manata is a behind-the-scenes consultant on these projects as well. 

Saturday, February 23, 2019

Van Til and Vallicella

The proof presupposes the Law of Non-Contradiction (LNC), and I am willing to grant that LNC and the other laws of logic can be argued to presuppose in their turn the existence of an omniscient necessary being. One argument to this conclusion is the Anderson-Welty argument which I critically examine here. I conclude that, while the argument is not rationally compelling, it does contribute to the rationality of belief in God.  In other words, the Anderson-Welty argument is a good reason to believe in the existence of God. It does not, however, establish the existence of God in a definitive manner. It does not show that the existence of God is absolutely certain.

At the very most, then, one can plausibly argue to, but not prove, the existence of an omniscient necessary being whose existence is a presupposition of our rational operations in accordance with the laws of logic.  But this is a far cry from what Van Til asserts above, namely, that the truth of Christianity with all its very specific claims is a condition of the possibility of proving anything. Trinity and Incarnation are among these specific claims. How are these doctrines supposed to bear upon the laws of logic? [emphasis mine]


i) Is a philosophical argument a failure unless it can establish a claim with absolute certainty? Isn't that a retrograde definition of a successful philosophical argument? Aren't nearly all philosophical arguments failures by that austere standard? Is that a deficiency of the argument, or an artificial standard of success? 

ii) What if your aim was never to prove the truth of Christianity by one particular argument? Is your argument a failure if it misses a target it was never aiming for?

What if your particular argument is part of a cumulative case strategy? No one argument gets you to the finish line, but each argument combines with other arguments towards that objective? 

Monday, January 21, 2019

Is natural evil postlapsarian?

Although Dr. Welty discusses various objections to his theodicy, he regrettably omits any mention its greatest challenge: the widespread conviction that it has been decisively disproven by science.

Mainstream science has no place for the Biblical Adam & Eve in an idyllic Garden of Eden. Allegedly, humans evolved, via a cruel quest for survival, in a group of at least several thousand; there never were two humans from whom all other humans descend.

Even worse, fossils indicating natural evil (animal suffering from predation, disease, etc.) are allegedly dated millions of years older than the earliest humans, in blatant contrast with the notion that natural evil was caused by Adam's Fall.

Clearly, the view that natural evil comes only after Adam's Fall entails rejecting mainstream fossil dates, and thus essentially embracing Young Earth Creationism (YEC).

Unhappily,  the bulk of Christian Academia has largely accepted mainstream science, and hence disdains YEC. Some Christian scholars do uphold the traditional natural evil theodicy, while at the same time explicitly rejecting YEC, seemingly unaware of any inconsistency (e.g., Wayne Grudem, Douglas Groothuis). Most, however, embrace alternative theodicies that are more in tune with mainstream science.


That raises a number of issues:

1. In historical theology, what phenomena did Reformed theologians classify as natural evils? Natural evil is a very broad category, with many examples. 

i) Wildfires are a natural evil, caused by lightning. Does Byl think there was no lightning or fire before the Fall? 

Campfires can start a wildfire. Was everything fireproof before the Fall? 

ii) Flooding is classified as a natural evil. Does that mean the Nile river couldn't/didn't flood before the Fall? The annual flooding of the Nile river is beneficial to Egyptian farmers.

iii) If a tsunami sweeps over an island that has no fauna, is that a natural evil? It doesn't kill anything. Is a tsunami intrinsically a natural evil, or only in conjunction with other factors?

iv) An avalanche is classified as a natural disaster. Were avalanches impossible before the Fall? If you have mountains and precipitation, that produces snowpacks that produce avalanches. 

2. This all goes to the ambiguity of "natural evil". "Natural evil" is a term of art. Many natural evils are natural goods. They are necessary to maintain the balance of nature. They are only evil if a human being is in the wrong place at the wrong time.

3. It's not as if the Bible has a list of labeled natural evils. Is it a biblical presupposition that animal death is evil? Was the sacrificial system evil? 

4. I've always thought the YEC claim that natural evil must be a result of the Fall is philosophically and exegetically naive:

i) YECs assume that natural evil is incompatible with the creation as originally "good" or "very good". That, however, is not an exegetical conclusion. Gen 1 doesn't define the goodness of creation in contrast to so-called natural evil. It doesn't speak to that issue one way or the other.

ii) The standard objection to animal suffering is not that it happened before the Fall. What atheist frames the objection that way? If we say animal suffering is a postlapsarian development, that's irrelevant to the argument from animal suffering. Atheists will say animal suffering is incompatible with divine benevolence or wisdom regardless of whether that is deemed to be a prelapsarian or postlapsarian phenomenon. God is still complicit in predation, parasitism, and disease even if that's indexed to the Fall. So it's a failed theodicy. 

iii) In addition, Byl is a Calvinist, so he believes that God predestined all natural (and moral evils) and implements his blueprint via meticulous providence. 

iv) Even within an Edenic setting, it doesn't follow that there was no predation or animal death. Although the animals are tame in relation to Adam and Eve, that carries no presumption that they are nonviolent in relation to other animals. 

v) Apropos (iv), Gen 2-3 implies animal mortality, for the tree of life is reserved for humans. And it only existed in the garden, not outside the garden.

5. YEC, if true, entails the falsity of the evolutionary narrative. However, the converse doesn't follow. The falsity of YEC doesn't entail the evolutionary narrative. 

6. Allowing for natural evils before the Fall doesn't mean innocent Adam and Eve were exposed to natural evils. God could providentially shield them from natural evils. 

7. Byl is both a geocentrist as well as a young-earth creationist. From his viewpoint, they share a common hermeneutic. The same hermeneutic yields young-earth creationism and geocentrism.

The dilemma that generates is that I don't see how he can draw a hermeneutical line between geocentrism and flat-earthism. He's scornful of Enns doe arguing that Scripture teaches a three-story universe, but it sure looks to me like the same hermeneutic that yields a geocentric cosmography yields a flat-earth cosmography as well. And the reasoning is reversible. They rise and fall together. 

Thursday, June 28, 2018

Gunslinger rematch

I'm going to comment on some statements in this article: Kenneth D. Keathley, "Molinist Gunslingers Redux: A Friendly Response to Greg Welty," Perichoresis 16/2 (2018), 31–44. 

One weakness in his article is a failure to distinguish between popularizers (Gerstner, Sproul Jr.) and high-level thinkers. In addition, he misclassifies Bruce Ware as a Calvinist, but Ware's position is quite eclectic. He's an Amyraldian Molinist who rejects classical theism. 

Initially, in response to the historical challenge of fatalism as espoused by the Greek Stoics and later by Islam, the primary concern of Molinism was to establish the contingency of future conditionals in the light of God’s exhaustive foreknowledge (Craig 1988).

i) I don't know what that means. Is Keathley alleging that Molinism was developed in response to Greek Stoicism? Was that a major rival in the 16-17C?

ii) Likewise, Islam had been around for nearly a millennium by the time of de Molina. Is Molinism a belated response to Islam? Wasn't Molinism an alternative to Thomism? 

iii) Mutazilite Islam is the Muslim version of freewill theism.

iv) Is Asharite Islam "fatalistic"? Asharite Islam subscribes to occasionalism. 

How is Keathley defining "fatalism"? On a classic definition of fatalism, an agent can be the ultimate source of his own actions as well as having multiple courses of action open to him. The catch is that every route and alternate route have the same detonation. 

As many Calvinists followed Edwards in embracing determinism (particularly in America)...

Throughout his article, Keathley seems to adopt the view of Muller and Crisp that Calvinism was originally indeterministic, and only took a deterministic turn under the influence of Edwards. But what's distinctive to Edwards has more to do with occasionalism and idealism, not determinism. That traditional Calvinism is antithetical to libertarian freedom had been defended by James Anderson and Paul Manata:


My short answer to his second claim is that I do not think Welty has made his case. And it seems that his argument, if successful, would succeed too well. All theological systems that uphold the traditional view of God’s omniscience would be open to this charge (Welty may contend that that’s exactly his point). 

Indeed, that's his point. Welty is presenting a tu quoque argument, viz.:


But what does this say about the efforts of apophatic Calvinists to distance themselves from the implications of causal determinism? Most Calvinists distinguish between primary and secondary causation, and embrace infralapsarianism over supralapsarianism. This is why Welty takes an apophatic approach while leaving determinists to fend for themselves. (‘If they are subject to critique, so be it.’) Many of our Reformed brethren recognize the moral difficulties posed by an adherence to causal determinism.

1. Keathley seems to be uninformed about Welty's own position. For instance, he seems to be unaware of the detailed response that Welty and Cohen offered to Walls:




2. Because the Calvinist/Molinist debate can spin off in so many different directions, Welty is bracketing certain issues.

3. A weakness running through his article is Keathley's failure to define his terms:

i) What does he mean by X causes Y?

ii) What does he mean by X determines Y?

iii) Is "causal determinism" something over and above causation or determinism? What does causation add to determinism? What does determinism add to causation?

iv) Take David Lewis's definition: "We think of a cause as something that makes a difference, and the difference it makes must be a difference from what would have happened without it."

On that definition, the Molinist God causes sin and evil by actualizing a possible world containing sin and evil. 

I do not believe one can hold that God accomplishes his will via causal determinism and then appeal to mystery. Where, exactly, is mystery to be located? There seem to be three options. One place possibly could be the question as to why God created this particular world knowing that evil would occur. To my knowledge, both Molinists and Calvinists confess this type of mystery. There’s no dispute here. A second possible location could be the mystery of how God accomplishes his will through other causal agents. Molinists contend that God, with precision and success, perfectly accomplishes his will through genuinely free creatures primarily by means of his omniscience. 

In addition, the Molinist God accomplishes his will by instantiating a particular timeline.  

If, concerning God’s concurrent actions with other agents, apophatic Calvinists wish to appeal to mystery on this point, then this would not seem necessarily to be an item of conflict between Molinists and Calvinists. Molinists provide a possible model while apophatic Calvinists do not, but both affirm that God can and does perfectly accomplish his will. Again, this creates no problem between apophatic Calvinists and Molinists.

It’s one thing to say that it is a mystery how God concurrently accomplishes his will through other agents. It’s another thing to say that it’s a mystery as to why he is not accountable when he causally determines their sins. If this is what is meant when Calvinists appeal to mystery, then indeed Molinists and Calvinists are at odds at this point.

While that's an important issue in its own right, it's irrelevant to the topic of Welty's essay, which was a tu quoque argument. 

But we are created in the divine image, so we reflect God’s ability to make moral choices. 

Many freewill theists have a bad habit of using the divine image as a cipher. They attribute certain things to the divine image. They don't bother to exegete the concept of the divine image from Scripture, but begin with their concept of God (a la freewill theism), then read that back into the divine image. 

We all agree that the man who hires a hit man is also guilty of the hit man’s crime.

And that's in part because the hit man is instrumental to the Don's malicious intentions. On the other hand, using one person to kill another person isn't inherently blameworthy. Generals give orders to foot soldiers in a just-war situation. 

God indeed works through the evil done by wicked agents (Genesis 50; Isaiah 10; Acts 2). All Christians affirm this. But it really does matter whether or not those agents were the origins of their respective choices, and that at significant points they possessed the genuine ability to make those choices.

From the viewpoint of a freewill theist. But that's the very issue in dispute. Keathley fails to argue for his key assumptions. He takes them for granted. And he fails to counter arguments to the contrary. So his objection begs the question. 

In moral arguments, intentions matter. Even a strongly Reformed voice such as Paul Helm emphasizes this: ‘In the case of evil, whatever the difficulties may be of accounting for the fact, God ordains evil but he does not intend evil as evil, as the human agent intends it... There are other ends or purposes which God has in view’ (Helm 1994: 190). God’s intentions and purposes are different from the evil intentions and purposes of the wicked through whom he works or of those he permits to do evil. Molinism understands these evil persons to be the causal agents of their deeds. Thus, Molinism is not ‘sufficiently analogous’ to those versions of Calvinism that affirm causal determinism. 

But their acting in a particular way is determined by the Molinist God instantiating the possible timeline in which they act one way rather than another. God is a necessary cause of that outcome. 

God can permit or allow an evil for just reasons. Consider the following analogy. During World War II, the Allies broke the secret codes of the Germans. According to some historians, the British knew beforehand of German plans to carpet bomb the city of Coventry. It was determined that if special actions were taken to defend the city, then that would tip off the Nazis that the Allies were intercepting their messages. Churchill reportedly made the difficult decision to allow the bombing to occur. Most would agree that Churchill’s responsibility is not ‘sufficiently analogous’ to that of the Axis forces. Similarly, God permits evil but is not culpable for it. God can accomplish righteous purposes through agents that have evil intentions.

Again, consider the following analogy. Imagine the execution of a heinous criminal. Imagine also that the executioner carrying out the death sentence secretly delights in killing other humans, and he enjoys legally performing an act that otherwise would be considered murder. The executioner’s evil intent does not impugn the state’s just cause. The intent of both is not ‘sufficiently analogous’. Similarly, God uses evil people, but he is not culpable for their evil deeds.

And a Calvinist can help himself to Keathley's examples.

Those of us opposed to causal determinism are not simply shadow boxing. The challenges posed by determinism to morality become very clear in the writings of Darwinists. For example, in his The Moral Animal: The New Science of Evolutionary Psychology, Robert Wright (a former Southern Baptist) argues for genetic causal determinism. He does not hesitate to describe humans as ‘puppets’ and ‘robots’. He disposes of notions such as free will and moral responsibility. Evil does not exist. He laments that humans are ‘robots’ held ‘responsible for their malfunctions’ (Wright 1994: 355). The primary advocates of determinism are not Calvinists, but atheists and Muslims.

i) That's an inept comparison because if fails to consider what lies behind the determinate outcome. Are these rational determinants? 

ii) Moreover, in the AI literature, there's the issue of whether robots are moral agents. Mere automata aren't moral agents, but what about artificially intelligent robots? What about robots that pass the Turing test? 

I rejoice that mysterian Calvinists such as Welty also reject causal determinism. 

i) He's misinterpreting Welty. Welty's strategy in his essay is to zero in on a particular issue.

ii) As Welty points out in his recent book on the problem of evil, there's no philosophical consensus on the concept of causation. 

It may have been helpful if Welty had spelled out clearly what models of human agency he believes to be compatible with apophatic Calvinism. Does he believe that libertarian freedom is a live option for the apophatic Calvinist? He doesn’t say. The mysterian Calvinist seems to be noncommittal on whether or not God causes sin. If God causally determines sins, then the Calvinist position is indeed more problematic than the Molinist position, regardless of a claim to mystery. 

i) Yes, there's a sense in which the Calvinist God causes sin. That's not unique to Calvinism. The same holds true for Thomism, Molinism, open theism, Lutheranism, and simple-foreknowledge Arminiansim. 

ii) Yes, there's a sense in which the Calvinist God determines sin. The same holds true for Thomism, Molinism, open theism, Lutheranism, and simple-foreknowledge Arminianism.

For instance, in a cause/effect world, if a suicide bomber pulls the pin on a hand grenade, it's too late to change his mind. At that point, detonation is inevitable. He crossed a line of no return. Even if we grant for the sake of argument that the outcome was indeterminate up to that tipping-point, once he pulls the cap, the outcome is now determinate. Likewise, if the Molinist God instantiates a particular timeline in full knowledge of the outcome, then his creative fiat locks in that particular course of events. 

And it seems that if one denies that God causally determines sinful actions, then one needs Molinism to get the robust sense of God’s sovereign control of all things. For the Christian, the options are divine determinism (either of an occasionalist variety or of an Edwardsian strongest desire variety) or (some form of) libertarianism. What other option is there?

Circumstances also limit one's field of action. If one exit is locked while the other exit is unlocked, I can only use the exit with the unlocked door. That's different from either occasionalism or strongest desire psychology. I don't offer that as an all-purpose alternative, but simply to illustrate Keathley's blinkered imagination. 

For the reasons given above, Molinists believe that preserving libertarian freedom makes a significant difference in distinguishing between the just and pure decisions by God either to permit or work through the wicked and impure actions of humans. 

If that was Keathley's aim, then he needed to write a different article. As it stands, he's claiming the benefits of his preferred conclusions without providing the supporting arguments. There are no intellectual shortcuts in this debate. It's philosophically demanding trench warfare. 

According to determinism, humans are not agents but rather are mere instruments. 

That's his opinion, but he hasn't laid the groundwork for that conclusion. 

Wednesday, May 30, 2018

Why Is There Evil In The World (And So Much Of It?)

I recently read Greg Welty's Why Is There Evil In The World (And So Much Of It)? (CFP 2018), available here:


I previously read a draft copy. The book is pitched at a popular level, although it demands an intellectually serious reader. 

This is a Christian theodicy from a Reformed perspective, by a brilliant, philosophically astute, traditionally orthodox thinker. Briefly put, his book is easily the best treatment of the problem of evil, by a wide margin, currently available.

Greg has roughly two methods of presentation:

He expounds the opposing position, then critiques it.

He expounds his own position, then counters potential objections. In addition, he has a final chapter fielding objections. 

• He defends a version of the greater-good theodicy. For him, the greater-good theodicy is a general theodicy comprising four specific theodicies, including the soul-building theodicy and the higher-order goods theodicy.

• Throughout the book there's trenchant engagement with Scripture.

• He critiques the freewill defense and the natural law (stable environment) theodicy.

• He makes moderate use of skeptical theism.

• He discusses the philosophically contested concept of causality.

I have a few caveats:

i) One objection to the soul-building theodicy is that it's a circular justification for the existence of evil inasmuch as these virtues are only valuable in a world containing evil. Given such a world, these have a purpose, but that fails to justify a world containing evil in the first place. Unless I missed it, Greg didn't address that objection. I have my own response, and I expect Greg has a well-oiled answer if challenged.

ii) I think the greater-good theodicy is overkill. It's a stronger theodicy than required. I think an alternate-good theodicy defense would suffice. And because that's less ambitious, it has a lower burden of proof.

iii) An atheist might object that even if Greg successfully demonstrates the consistency of God's existence with scope and nature of evil, that's special pleading. With sufficient ingenuity, you can make many positions consistent with the facts, but that's saving appearances.

In a sense, a theodicy needs to be supplemented by a case for God's existence. If there's positive evidence for God's existence, then that should figure in an overall theodicy. 

Of course, that's a different kind of book. And Greg provides evidence in his courses on Christian apologetics. 

iv) Greg argues that even if an atheist denies moral realism, he can still deploy the argument from evil because a good God will prevent gratuitous pain and suffering.

I demur. You can't substitute pain and suffering for moral categories. Divine benevolence is a moral category. To claim that gratuitous pain and suffering are incompatible with God's goodness smuggles moral realism back in through the rear door. 

That said, towards the end of the book (p198), Greg points out that naturalism drastically aggravates the problem of evil. Ironically, the problem of evil is incomparably worse for an atheist. 

Saturday, May 12, 2018

"Why you can't use logic to prove God"

I'm going to comment on this post:


There is much talk about logic today. It is obviously used significantly in discussions with philosophers and mathematicians. It has also been a tool of some (particularly presuppositional) apologists to argue for God. They insist that atheists cannot account for logic since it is immaterial and universal. Since logic undeniably exists, then something else immaterial and “universal” must also exist to account for it, namely God. 

There's a lot more to the argument than: since universal, immaterial logic undeniably exists, then something else immaterial and “universal” must also exist to account for it, namely God. 

This understanding of logic is taught as if it is some ephemeral abstract notion or set of principles of reason that “exists” only in the mind with no basis in physical reality. 

The position is that logic primarily or fundamentally subsists in the infinite and timeless mind of God. God's mind is the exemplar. Logic has its "basis" in God's mind. However, math and logic are exemplified in time and space. 

That is, according to this argumentation physical reality cannot account for the principles of logic. Nothing could be further from the truth. The principles of logic, such as the principles of identity, excluded middle, and non-contradiction are not just principles of rationality. They are principles of being. Let’s look to see what they are and why they must be grounded in reality and not thought.

It's important to distinguish between divine and human thought. The position is not that logic is reducible to human psychology. It's not intuitionism (e.g. Brouwer). God's thought and God's being are conterminous. 

Yes, you could say logic is grounded in "being", but not just any kind of being will do. Physical existence won't suffice. 

The law of identity states that something is identical with itself. If a thing is “A” then it is “A”. If something is a tree, then it is a tree. This seems rather mundane and uninformative; however, try imagining reality if this were not the case. The principle of excluded middle says that something is either “A” or “non-A”. It is either a tree or a non-tree. There is no middle ground (the middle ground is excluded). The law of non-contradiction says something can’t both be “A” and “not-A” at the same time in the same sense. That is, it can’t be a tree and a non-tree simultaneously.

That confuses logic with concrete exemplifications (or property instances) of abstract objects. A tree approximates the law of identity. Ideally, logical and mathematical truths map onto static, timeless relations or objects with discrete boundaries. 

But physical objects undergo continuous incremental change. Physical objects have fuzzy boundaries in space and time. They have degrees of solidity. They exchange atoms with the surrounding environment. They blend into each other. So that comparison is counterproductive. There's never an exact match between a tree and the law of identity. 

We get our understanding of these principles from the world around us. They are not just principles of thought, but of being. The law of non-contradiction is not just that a statement can’t be both true and false. The law of non-contradiction is that something in existence can’t be and not be simultaneously in the same way. In other words, a tree can’t be a tree and not a tree at the same time in the same sense. These laws are thus grounded in being and abstracted via our knowing process. We have experience of reality and then induce said principles of being and know that they apply to all thought and experience…While these laws are undeniable and are self-evident, the source of our knowledge of them is still physical reality. 

He operates with an epistemology according to which all knowledge of universals is based on a psychological process of abstraction from particulars. 

Now, I have no problem with sense knowledge or induction. Yes, we often generalize on the basis of samples. Fine. 

But that can't be the basis of knowledge all the way down. You can't derive a concept of numbers from observing physical objects, for unless you already have numerical concepts to work with, you can't group physical objects numerically. Numbering objects requires a numerical preconception. 

You can't bootstrap logical or mathematical knowledge from sensory perception. You can't group five apples by number unless you recognize that they comprise five apples, and you're not going to arrive at that classification by staring at some apples with a blank slate mind. 

It takes knowledge to learn. It takes some prior knowledge to acquire additional knowledge. An initially empty mind has no frame of reference to evaluate sensory input. The mind of the percipient must have a logical structure which enables it to organize or reorganize sensory input. An inbuilt classification-system. 

Another way we know the laws of logic is that they are undeniable. One cannot deny something like the law of non-contradiction without using it. If one attempted to do this, he would be forced into saying that his position is true and not false, and that the opposite opinion would be false and not true. We don’t argue from more foundational principles to arrive at these principles of logic. They are first principles of thought and being. The are first because they are foundational and self-evident. They can’t be denied. Further, they don’t require, nor could they require, antecedent proof. Such proof would have to use the laws of logic.

But necessary truths of logic can't derive from contingent truths of the physical world. In many respects, the physical world might have been different. Causation is a weaker principle than logical entailment.  

Physical reality is known directly and is evident to our senses. 

Actually, physical reality is known indirectly. Physical reality is mediated to the mind via sensory perception. A process of encoded and decoded information. 

Note I said “evident” not “self-evident.” Propositions are self-evident when we know their meaning. “Bachelors are unmarried men” is a self-evident proposition because as soon as we know the meaning of the terms and the proposition as a whole, we know it is true. 

But that's different from logic. That's stipulative. True by definition. 

However, things are evident to our senses. I do not need an argument that there is a tree outside of my window. I simply see it. Thus, things are evident and the laws of logic are self-evident and undeniable. (I realize I am skipping over a veritable wonderland of skepticism and rationalism which I have no desire to deal with here. I simply don’t think I need to “justify” the existence of something I just ran my car into. If someone honestly doubts the existence of external reality, I would submit that his problem is not philosophical but psychological and he needs to seek medical treatment immediately.)

That confounds the metaphysics of math and logic with the psychology of sensory perception. 

Of course, such principles can be applied to thoughts and propositions that don’t say things about reality. Logic can be applied to fictitious beings and propositions that say something like, “All monsters live in London.” However, such fictitious beings and propositions are still based in being—that is, things that exist extra-mentally. While a fictitious being doesn’t exist in reality (by definition), we get the concepts of things like monsters from reality. In other words, following the great empirical maxim, “All knowledge is grounded in reality,” we don’t have any new ideas, even of fictitious monsters, that are not tethered to or grounded in reality.

i) Fictions, hypotheticals, and counterfactuals have their source in God's power and imagination. Something is ultimately possible because God can enact that scenario. And God's infinite imagination is the repository of all concepts. God has created rational agents with some knowledge and power. 

ii) I'd add that fictions are ideas, and therefore have a discrete identity lacking in physical objections. 

This is why the presuppositional argument for the existence of God from logic fails. A common argument from them is that atheists cannot account for logic. Logic is immaterial and universal, they say, and as such, atheists can’t account for anything that is immaterial and universal. But if what I am arguing for is true, the presuppositionalist’s argument is not successful. This is because atheists can account for logic, because logic is grounded in reality and being. Yes, God is being as such, and as “being” the laws of logic are tethered to God. (God is God, God cannot be non-God, etc.) That is, in a sense they are antecedently grounded in God because they would be the case even if the physical realm did not exist.

But that means an atheist can't account for the laws of logic inasmuch as these are essentially independent of the physical world. To be sure, some atheists are Platonic realists, but that's different from Brian's paradigm. Moreover, Platonic realism is arguably ad hoc. 

Another important note is that the laws of logic are not really immaterial. Sure the abstracted propositional form of being such as “A tree can’t be a tree and not a tree simultaneously” can be immaterial. But if logic is not merely a rational enterprise and is a second order based on the first order of physical reality, then the basis for logic is not immaterial. 

God's rationality is not a second-order exercise based on God's first-order being. That's a false dichotomy. God's mind and God's being are both first-order realities, which underlie physical reality. 

Our abstractions of the principles are mental, such as numbers, but many, if not most, philosophers do not think that numbers are real. 

That's an illicit argument from authority. Moreover, it's not coincidental that mathematicians like Quine, Gödel, and Penrose subscribe to mathematical realism. 

They like logical principles are abstracted from the real world. The number 2 does not exist. But I can say there are two trees. The two-ness is simply the addition of one more tree than the first. Math then is like logic in that the numbers are abstracted from the material world and then one can perform mental operations. But these numbers do not exist (unless one holds an extreme Platonic view). And as such, the atheist can account for logic by its foundation in sensible objects—just like he can account for numbers. Thus, the presuppositional argument for logic is going to reduce to some cosmological argument that says the universe needs a grounding in something other than itself.

If Big Ben strikes three o'clock, what do I actually hear? Do I hear three tones? No. I only hear a succession of discrete tones. I hear one tone, followed by another tone, followed by another tone. My mind apprehends three tones. That's not given in the raw stimulus, but requires an act of intellectual recognition. The mind isn't just a passive recipient of auditory input, but makes a contribution by its ability to classify the auditory input using innate mathematical categories. 

Compare a human percipient to a canine percipient. Both hear the same sounds, but only the human has the additional understanding to discern the numerical significance of the tonal sequence. A dog doesn't register "three o'clock". It lacks the intelligence to group particulars. There must be something prior in the mind to interpret what was heard as three of something.