Why is there something instead of nothing? That's the question — along with some variations ("What banged? Why did it bang? And what was going on before it banged?") — Jim Holt asks, and sets out to answer (but, unsurprisingly, doesn't, entirely), in Why Does the World Exist: An Existential Detective Story.
Coincidentally I was about 20% of the way through this book (so maybe Holt does answer it, I dunno) when this TED Talk turned up. Why Does the World Exist? is Argo Bookshop's next book club title, set for discussion on September 25.