Does God Exist? · Arguments Against God

Cosmological Disproof

Modern cosmology is said to remove the need for a first cause of the universe.

Tagged: Arguments against God Cosmology

The cosmological argument claims that the universe needs a cause beyond itself, whether because it began to exist or because it is contingent. The disproof replies that contemporary cosmology offers models in which the universe has no beginning in the relevant sense, or in which quantum processes allow a universe to arise without a prior cause. If such models are viable, the argument runs, the need for a first cause disappears, and the universe may simply be a brute fact.

The disproof does not claim to prove that God does not exist; it claims that cosmology no longer forces the theist's conclusion, and that the universe can be explained without appealing to a cause outside it.

The Argument in Form

  1. The cosmological argument requires that the universe began to exist or is contingent in a way that demands a cause.
  2. Contemporary cosmological models allow a beginningless universe or a quantum origin without a prior cause.
  3. A beginningless or quantum universe needs no cause beyond itself.

Conclusion: Therefore, cosmology does not require a first cause, and the cosmological argument fails.

Proponents and History

Quentin Smith was the most prominent philosophical defender of a naturalistic cosmology, arguing that the universe could be uncaused and that quantum cosmology undermined the Kalām argument's premise that the universe began to exist. Other physicists and philosophers have proposed beginningless models, cyclic universes, and multiverse scenarios. These proposals remain contested, but they have shifted the debate from pure philosophy toward the details of physical theory. The disproof is therefore strongest when read as a challenge to one premise rather than a proof of atheism.

Standard Responses

Theists reply that the philosophical arguments for a beginning stand apart from any one physical model, since they concern what it means for a temporal series to have a beginning at all. They also argue that even a beginningless universe still calls for an explanation of why there is a universe rather than nothing, and that quantum models presuppose laws and a vacuum state that themselves require explanation. The question, they argue, is not settled by cosmology alone, and the cosmological argument must be answered on philosophical grounds. Cosmology informs the debate without deciding it by itself.

References

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