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    If actual infinities are ruled out by Craig's reasoning, ... — Carmelics
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    Challenges→Although actual infinites can have an ideal existence, they cannot really exist.

    If actual infinities are ruled out by Craig's reasoning, the continuous spacetime manifolds and infinite-dimensional Hilbert spaces employed in modern physics would also be metaphysically impossible, an implausible conclusion.

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    Key Terms

    Actual infinities(as used in philosophy of mathematics)
    Infinities that are thought of as complete, finished wholes—like the set of all natural numbers existing all at once—rather than just processes that go on forever.
    Craig's reasoning(as a reference to a specific philosopher's argument)
    William Lane Craig is a philosopher who argues that actual infinities (infinite things that really exist, not just in math) are impossible in the real world. This statement is referring to his argument against infinities.
    Hilbert spaces(as a technical concept from quantum physics)
    A special mathematical space used in quantum physics (the physics of tiny particles) that can have infinite dimensions. It's a tool physicists use to describe how particles behave.
    Metaphysically impossible(as used in metaphysics)
    Something that cannot exist or happen in the deepest reality, no matter what—not just practically impossible but impossible by the very nature of how reality works.

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    continuous(Used to characterize the divisibility of appearances and of space and time)
    Infinitely, or at least limitlessly, divisible.
    implausible conclusion(as evaluating the consequence of Craig's argument)
    A result or outcome that seems unlikely or unreasonable to believe, even if someone's logical argument technically leads there.
    infinite-dimensional(as describing properties of mathematical spaces in physics)
    Having an unlimited number of dimensions or directions. In normal space we have three dimensions, but in advanced physics mathematics, we use spaces with infinitely many.
    spacetime manifolds(as a concept from physics and mathematics)
    A mathematical way physicists describe the universe as a four-dimensional space that combines the three dimensions we see (length, width, height) with time. Think of it as the fabric or stage on which everything happens.

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    Natural Theology1 linked

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    Although actual infinites can have an ideal existence, they cannot really exist.

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