If we're talking about a singularity, it's not pedantic. If you reverse time and go back to the Big Bang, it's not possible to define what happens after you hit

If we're talking about a singularity, it's not pedantic. If you reverse time and go back to the Big Bang, it's not possible to define what happens after you hit the singularity, at least according to current theories. As another commenter pointed out, the article is referring to the "hot Big Bang era", not the Big Bang singularity, so that's what is causing the confusion. It is possible to talk about what happened during and after cosmic inflation.