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The Divine Dilemma: Can God Solve the Halting Problem?

Key Takeaways:

  • The halting problem proves there are inherent limits to what can be computed algorithmically.
  • Omnipotence is typically defined as the ability to do anything logically possible, not logically impossible things.
  • Many philosophers argue that even an omnipotent being cannot defy the principles of logic.
  • Solving the halting problem universally would involve a logical contradiction outside the scope of omnipotence.
  • Grappling with such paradoxes pushes us to question assumptions and explore the depths of logic and reason.

In a recent computer theory class I taught, we covered Alan Turing‘s halting problem. I demonstrated how the problem is undecidable (uncomputable), meaning there is no algorithmic solution to determine if a given program will halt or run indefinitely for a given input. I explained that according to the theory, solving the halting problem is a logical impossibility, unachievable not just with our current capabilities, but even given a million years to work on it.

One student then raised their hand and asked, “What about God? Could God solve it?” I replied with a lighthearted chuckle, “Not even Him,” which drew some laughter from the class at my hyperbolic statement. However, that humorous response belied a deeper realization – it seems that not even an omnipotent entity could overcome the logical limitations inherent to the halting problem.

Let’s dive into this mind-bending question that sits at the intersection of computer science, philosophy, and theology. Hold on to your hats, because we’re about to take a wild ride through the fascinating realms of computability and divine power.

Understanding the Halting Problem

In simple terms, the halting problem is about predicting the behavior of programs – will they finish their task or get stuck in an infinite loop, endlessly spinning their wheels?

Now, here’s where things get wild. Turing proved that an algorithmic solution to the halting problem cannot exist. Yes, you read that right – no algorithm can correctly determine whether every possible program-input pair will halt or not.

This discovery has significant implications. It shows that there are inherent limitations to what can be achieved with algorithms and computational methods. Some questions are fundamentally uncomputable, setting boundaries on the scope of computational theory and practice. It’s like hitting a brick wall, but for computers.

The Nature of Omnipotence

Omnipotence is typically defined as the ability to do anything that’s logically possible. In theological contexts, it refers to the unlimited power attributed to a divine being like God. But here’s where things get tricky – interpretations of what omnipotence entails can vary.

Now, here’s the million-dollar question: does logical consistency apply to an omnipotent being? Many philosophers argue that logical contradictions don’t fall within the scope of omnipotence. In other words, an all-powerful being can’t defy the principles of logic.

Now that we’ve got a handle on the key concepts, let’s apply them into the juicy stuff – the paradoxes that arise when considering an omnipotent being’s capabilities.

The Omnipotence Paradox

The Paradox of the Stone

Ever heard of this paradox? It goes a little something like this: “Can God create a stone so heavy that even He can’t lift it?” If God can create such a stone, then there’s something He can’t do (lift the stone). But if He can’t create the stone, then there’s still something He can’t do (create the stone).

Now, philosophers have been grappling with this paradox for centuries, and they’ve come up with some interesting responses.

The Logical Impossibility View

Thomas Aquinas, in the 13th century, argued that omnipotence doesn’t include the power to do the logically impossible. In his view, tasks that involve logical contradictions aren’t really tasks at all – they’re just nonsense.

Modern philosophers like Norman Geisler and William Lane Craig support this interpretation, suggesting that omnipotence means the ability to do all that’s logically possible. If we build a 3D printer that can create anything that’s physically possible, it still will not be able to print a Klein bottle – not because it’s not powerful enough, but because a Klein bottle is just a mathematical concept that can’t exist in the real world.

The Pseudo-Task Concept and Genuine Abilities Argument

Then we’ve got George Mavrodes, who introduced the idea of “pseudo-tasks” – tasks that are inherently self-contradictory and thus not within the scope of any power, even an omnipotent one. A chef cannot cook a meal without using any ingredients. Sure, they’re a master of their craft, but some things are just straight-up impossible.

Harry Frankfurt took this idea further by arguing that the ability to perform self-contradictory tasks doesn’t fall within the domain of omnipotence because these tasks don’t constitute genuine abilities.

Applying Omnipotence to the Halting Problem

Alright, now that we’ve got a solid foundation, let’s consider what happens when we apply the concept of omnipotence to the halting problem.

Hypothetical Scenario

Imagine this: an omnipotent being, let’s call them God for simplicity’s sake, is faced with the halting problem. The question is, could God devise a method to determine for any given program and input, whether that program will halt or run indefinitely?

On the surface, you might be thinking, “Of course God could solve that problem – they’re omnipotent, ain’t nothing they can’t do!” But wait, because there’s a deeper layer to this dilemma.

Logical Implications

Solving the halting problem universally would require creating a solution that transcends the established limits of computability as proven by Turing’s work. In other words, it would mean coming up with a method that determines the outcome for every possible program-input pair without exception.

But here’s the kicker – such a solution would contradict Turing’s proof, which is rooted in logical consistency. It’s the same reason by which God cannot create a triangle with four sides – it just does not make sense, no matter how powerful the being is. According to Mavrodes and Frankfurt, tasks involving logical contradictions aren’t genuine tasks, and thus fall outside the scope of omnipotence.

Applying this reasoning to the halting problem, it becomes clear that expecting an omnipotent being to solve it universally would entail a logical inconsistency.

Therefore, even an omnipotent being would be constrained by the limits of logical consistency and computability. The nature of omnipotence doesn’t include the ability to perform tasks that are logically impossible, such as resolving the halting problem in a way that defies Turing’s proof.

Counterarguments and Alternative Views

Now, let’s be real – this is a complex issue, and there are always alternative perspectives to consider.

Different Interpretations

Some theologians argue that God’s omnipotence includes the power to transcend logical constraints altogether. In their view, God’s nature is fundamentally beyond human understanding and logic.

These interpretations propose that our logical framework might not fully encompass the capabilities of an omnipotent being. Making an analogy, we cannot try to understand the workings of a quantum computer using only the principles of classical physics – there’s a whole other level of complexity that we mere mortals might not be able to grasp.


Critics of the view that omnipotence can’t solve the halting problem might argue that it imposes human limitations on a divine being. They might suggest that God’s omnipotence includes the ability to redefine logical structures and principles altogether.

However, this perspective risks rendering the concept of omnipotence incoherent, as it would imply that logical contradictions are possible. 2 + 2 could equal 5 if God willed it? Well, at that point, we are venturing into territory where language and reason start to break down.

Additionally, some might argue that our understanding of computability and logic is incomplete, leaving room for an omnipotent being to solve the halting problem in ways beyond our comprehension. Fair enough, but this argument doesn’t really address the inherent logical contradictions involved in the halting problem as proven by Turing’s work.


Let’s bring this mind-bending journey to a close. Exploring whether an omnipotent being could solve the halting problem takes us down a rabbit hole of profound philosophical and logical inquiries.

For now, let’s appreciate the fact that exploring these deep questions helps us gain a richer understanding of the interplay between logic, computation, and divine power. It’s a philosophical workout for the mind, pushing us to question our assumptions and dig deeper into the nature of reality.

So, the next time you find yourself pondering the limits of an omnipotent being, remember the halting problem – a reminder that even the most powerful entities might be bound by the constraints of logic and reason. And who knows, maybe one day we’ll uncover a solution that blows all of our minds wide open. But until then, let’s keep exploring, questioning, and pushing the boundaries of what we think is possible.

Because in the end, it’s the journey of inquiry itself that matters most. Embracing the mysteries of the universe and challenging our preconceptions is what truly elevates the human experience. So let’s dive in, my friends, and see where this rabbit hole takes us next.

Further Reading

For readers interested in exploring these topics further, the following books are highly recommended:

Gödel, Escher, Bach: An Eternal Golden Braid” by Douglas Hofstadter – This Pulitzer Prize-winning book delves into the nature of human thought and logic, exploring themes related to computability, formal systems, and the limits of mathematics.

The Emperor’s New Mind: Concerning Computers, Minds, and the Laws of Physics” by Roger Penrose – Penrose examines the relationship between physics, consciousness, and computation, providing insights into the limitations of algorithms and the nature of human understanding.

The Power of God: Readings on Omnipotence and Evil” edited by Linwood Urban and Douglas Walton – This anthology includes key philosophical texts on omnipotence, providing a comprehensive overview of different perspectives on divine power and its logical constraints.

Turing’s Cathedral: The Origins of the Digital Universe” by George Dyson – This book offers a historical perspective on the development of digital computation, including Turing’s contributions, and explores the broader implications of these technological advancements.

These books provide valuable insights into the complex interplay between logic, computation, and philosophy, enriching the reader’s understanding of the fundamental questions at the heart of this discussion.