Atheism

That is the correct technical scope, in Guth’s own words: the theorem shows that inflating spacetimes cannot be extended into the infinite past under classical assumptions, and it says nothing about a quantum-gravity regime that might precede them. Vilenkin’s stronger reading, that the theorem combined with the failure of the main eternal models makes a beginning probable, is Vilenkin’s, and should be attributed to him rather than to the theorem. The claim survives in the form the leading eternal-universe models face a theorem-level obstacle, which is what the exhibit shows.

A fair philosophical reply. Notice where it leads. If absolute nothing is impossible, then something has always existed necessarily, which is the conclusion of the contingency argument under the next claim, and the theist then asks what that necessary something is. So the reply does not escape the argument; it moves the debate to whether the necessary reality is a physical field or a mind. That is a better place for the debate to be than a dispute over the word nothing.

The main models deserve naming: Hartle-Hawking’s no-boundary proposal, Penrose’s conformal cyclic cosmology, the Steinhardt-Turok ekpyrotic model, and loop quantum cosmology bounces. Each faces specific criticisms: the no-boundary proposal’s imaginary time is a mathematical device whose physical meaning is disputed, cyclic models face entropy accumulation over infinite cycles, and bounce models require physics that has not been confirmed. The general point stands: none has achieved consensus, and several have been shown to require a beginning or to break down over infinite cycles. The question is not closed, and it should not be presented as if it were.

Correct, and every worldview must stop at something uncaused. The difference the theist argues for is that God is offered as a necessary being whose non-existence is impossible, whereas the universe looks contingent: its constants, its particle count, its very existence all seem as if they could have been otherwise. Whether that distinction holds is the debate under the next claim, on contingency, and this exhibit should not be read as if the naturalist’s stopping point were uniquely arbitrary. It is arbitrary only if the universe is contingent, which is the thing to be argued.

This is the strongest challenge to the first premise. The reply is that the premise is not an empirical generalization but a metaphysical principle: things do not come into being uncaused from literally nothing, because nothing has no properties, including the property of producing things. If the principle failed, there would be no reason anything does not pop into existence uncaused all the time. Critics answer that quantum events look uncaused, which the Krauss exhibit addresses. The premise is defensible, and it should be described as a philosophical principle rather than a law of physics.

The step to God is a reasoned inference, not a proof. The argument for personhood is that a timeless, changeless cause that produces a temporal effect must either produce it necessarily and eternally (in which case the universe would be eternal, which it is not) or by free choice, which requires an agent. Critics dispute that dichotomy. The prior-universe option is addressed by the Borde-Guth-Vilenkin theorem, which constrains the whole chain of expansion, not just this universe. Weigh the personhood argument on its own terms; it is the step where the most is claimed.

This is Hume’s objection. The reply is that explaining each member of a series by the previous member does not explain why the series exists at all, or why it is this series rather than another; a chain of borrowed existence still needs something that does not borrow. Defenders of the argument also note that the composition fallacy does not apply automatically: if every part of a wall is brick, the wall is brick. Whether contingency composes in that way is a fair question, and Hume’s regress reply deserves to be weighed alongside the response.

Van Inwagen’s objection is a serious one. The standard reply, from Alexander Pruss and Joshua Rasmussen, is to weaken the principle: not everything needs an explanation, but every contingent fact does, and a free choice can be explained by the agent’s reasons without being necessitated by them. Whether a restricted principle avoids collapse while still supporting the argument is exactly the technical debate. The argument’s strength depends on how much weight the principle can carry, and that is the honest summary of where it stands.

The argument rather than the appearance is this: a necessary being must exist in every possible world, and it seems clearly possible for the universe to have had different constants, a different number of particles, or not to have existed; a thing whose every feature could have been otherwise is a poor candidate for necessity. The naturalist can reply, as Graham Oppy does, that only some underlying physical reality is necessary and the details are contingent. At that point the debate is whether an impersonal necessary reality can explain the contingent world without a choice. That is the real question, and Oppy’s Arguing About Gods is the place to see the atheist side of it argued in full.

A clever objection, associated with Hans Halvorson among others. The reply is that theism does not predict that God would sustain life miraculously against the physics; it predicts a universe with regular laws that make life possible, because a lawful world is what allows rational creatures to understand it and act in it. Fine-tuning is what one expects if God chose to create through natural regularities. The objection does show something: fine-tuning is not evidence for every conception of God, only for one that values a lawful creation.

The entry is used for the narrow point that the constants sit in narrow ranges, which it confirms, and the objections are taken up in the exhibits that follow: the multiverse, the anthropic reply, and the firing-squad response. It is fair to say that the same source presents the objections, and you should read those sections too. The normalizability problem in particular is the strongest technical objection, and it is treated under the Science case’s fine-tuning claim.

This is Ian Hacking’s argument, and it is a real one in the literature. The standard reply is that observer selection makes the difference: we could only find ourselves in a life-permitting universe, which blocks the fallacy charge in the multiverse case in a way it does not in the dice case. Whether that reply works is an ongoing debate (Roger White against Darren Bradley, for instance). It is a point in the theist’s favor that is often left out, and it belongs in any serious weighing of the multiverse.

The analogy isolates one point: I could not have observed otherwise does not explain why the improbable thing happened. That point holds regardless of whether the marksmen were aiming. The critic is right that the improbability of the constants is the disputed premise, which is the normalizability problem again. The firing squad answers the anthropic dismissal; it does not answer the probability question, and it should not be asked to.

Correct, and both numbers belong together. Most realist philosophers are not theists, so the survey supports the first half of the claim (realism is respectable) and not the second (realism needs God). The moral argument’s defenders are making a claim that most of their fellow realists reject, and that should be said plainly. Their reply is that the secular realists have not solved the grounding problem, only declared moral facts brute. Whether brute moral facts are acceptable is the debate, and the survey does not settle it either way.

Every philosophy student will raise this, and it deserves a direct reply. The standard theistic answer is that goodness is grounded in God’s nature rather than his will: God commands what is good because he is good, so the commands are neither arbitrary nor derived from a standard above him. Critics ask what makes God’s nature good, and defenders reply that on every view the buck stops with some ultimate good, and a perfect person is a better stopping point than a Platonic abstraction. The second half of this claim is a live debate, and this exchange is the center of it.

Both points are fair. The genetic fallacy warning applies symmetrically, so evolution explains moral feelings is not treated here as a refutation of realism; it is a challenge the naturalist realist must answer, which is Sharon Street’s debunking argument turned against naturalism itself. Tracking accounts are the naturalist’s reply to Street. The theist’s response to tracking accounts is that they require independent moral facts for the tracking to track, which reopens the grounding question. That three-step exchange is the state of the debate.

The parity argument is Wielenberg’s central move: if the theist can stop at God is good by nature, the atheist can stop at certain moral facts are basic. The theistic reply is that a mind is the kind of thing that can be a source of obligation, since obligations are owed to someone, whereas abstract facts are not; so the theist’s stopping point explains the bindingness of duty and the atheist’s does not. Wielenberg has a response to that too. This is a genuine debate, not a knockout, and the exchange is worth reading in full.

This is a common reply, and Plantinga has an answer: the argument is a reductio. It assumes naturalism for the sake of argument, derives that the naturalist has a defeater for all their beliefs, and concludes that naturalism cannot be rationally held. The theist who runs the argument does not accept its premise and so does not inherit the defeater. Whether the reductio structure succeeds is debated, but the branch-sawing charge misreads the form of the argument.

Fair, and it should be acknowledged. Newton’s specific inference from planetary stability was a gap argument that failed. The letter is cited only to show that Newton saw his science and his theism as connected, not to endorse his particular inference. Said plainly, it is an honest example of what a gaps argument looks like and why the next exhibit warns against them.

The theist’s answer is that why is there something rather than nothing is not a gap of the same kind, because it is not a question science could in principle answer. Science explains features of the existing world by other features of it and cannot explain the existence of the whole from inside. Critics reply that the question may be ill-formed. The distinction to hold onto is between gaps within nature, which science closes, and the question of nature’s existence, which is not the sort of thing that gets closed by more data.

Yes, and that should be conceded. Dawkins’s definition is not how the Bible uses the word, but it is how many Christians use it, and that usage is the source of the caricature. The claim here is about biblical vocabulary, and the popular usage is a departure from it. Conceding that makes the claim more credible, not less: the argument is with a definition, not with Dawkins’s observation of how the word gets thrown around.

True. This claim is aimed at the popular objection because it is the one people actually hear. The serious version of the challenge is evidentialism, the view that belief should be proportioned to evidence, and the Philosophy case engages Clifford directly. Nothing here pretends that answering Dawkins answers Clifford.

The translation difficulty is real: the KJV has evidence, the ESV and NRSV have conviction. What the word does not mean is blind guess; every rendering involves being convinced of something. The examples in Hebrews 11 involve trusting a God who had already shown himself trustworthy to Abraham and to Moses, which is the grounded part. Luke 1:1 to 4 and Acts 17:11 show the New Testament commending people who check claims, and the standard lexicons give pistis a range centered on trust and reliability rather than on belief without grounds.

The contrast in John 20 is between seeing for oneself and believing on the testimony of witnesses who saw, which is how nearly all historical knowledge works. Believing reliable testimony is not believing without evidence; testimony is evidence. Thomas is not rebuked for wanting evidence but for refusing the evidence the other disciples’ testimony already provided. The blessing is on those who will weigh that testimony without demanding to put their own hands in the wounds.

Fair, and worth saying. Trust extends beyond what is strictly proven, which is why it is trust; but it is proportioned to evidence, the way trusting a friend rests on their track record. Dawkins’s definition, belief in the absence of or against evidence, describes something different from proportioned trust, and that difference is the point. Faith goes beyond proof but not beyond reason is the short form.

Believers are glad to give reasons, which is the point of a case like this. But two things. You can argue for a negative; atheists do it with the problem of evil. And extraordinary claims require extraordinary evidence is itself a contested principle that cuts both ways: that a finely tuned, law-governed, conscious-life-bearing universe came from nothing with no cause is not an ordinary claim either. The fair rule is that everyone brings evidence.

That would hold if each argument had zero force, but that is the thing in dispute. If each raises the probability even a little, they combine, the way several independent clues raise the probability of a verdict. The atheist has to show each argument has no force at all, not merely that none is decisive alone. Swinburne makes this precise with probability. The reply zero plus zero assumes the conclusion.