Does the argument below sound convincing?Why is there Something rather than Nothing" is "just the kind of question that we will be stuck with when we have a final theory [of physics]. … We will be left facing the irreducible mystery because whatever our theory is, no matter how mathematically consistent and logically consistent the theory is, there will always be the alternative that, well, perhaps there could have been nothing at all." In modern physics, Weinberg explains, "the idea of empty space without anything at all, without fields, is inconsistent with the principles of quantum mechanics-[because] the [Heisenberg] uncertainty principle doesn't allow a condition of empty space where fields are zero and unchanging." But why, then, do we have quantum mechanics in the first place, with its fields and probabilities and ways of making things happen? "Exactly!" Weinberg says. "[Quantum mechanics] doesn't answer the question, 'Why do we live in a world governed by these laws?'… And we will never have an answer to that." "Does that bother you?" I ask. "Yes," Weinberg says wistfully. "I would like to have an answer to everything, but I've gotten used to the fact that I won't." Here's how I see it: The primary questions people pose-Why the universe? Does God exist?-are important, sure, but they are not bedrock fundamental. "Why anything at all?" is the ultimate question.
Why there is something rather than nothing?
Why is there something rather than nothing?Think of all the possible ways that the world might be, down to every detail. There are infinitely many such possible ways. All these ways seem to be equally probable-which means that the probability of any one of these infinite possibilities actually occurring seems to be zero, and yet one of them happened. "Now, there's only one way for there to be Nothing, right?" There are no variants in Nothing; there being Nothing at all is a single state of affairs. And it's a total state of affairs; that is, it settles everything-every possible proposition has its truth value settled, true or false, usually false, by there being Nothing. So if Nothing is one way for reality to be, and if the total number of ways for reality to be are infinite, and if all such infinite ways are equally probable so that the probability of any one of them is [essentially] zero, then the probability of 'there being Nothing' is also [essentially] zero." Because there are an infinite number of potential worlds, each specific world would have a zero probability of existing, and because Nothing is only one of these potential worlds-there can be only one kind of Nothing-the probabilily of Nothing existing is zero.