In a bit of a change up, Professor Stein informs Ronnie and Jason that he was wrong for all of those years in what he believed the Firestorm Matrix to be. That it wasn’t created by the accident as he had always assumed, rather it had always existed. The experiment was to validate the existence of the Big Bang, that there was a spark that preceded the existence of the universe, and that instead of proving it, he captured it.
That the voice they’ve been hearing might be the the spark of creation, because the Matrix is the Big Bang. Not just that, but it’s like a bomb waiting to go off and restart the universe. That together, as Firestorm, Ronnie and Jason are the most dangerous being in the universe.
And them arguing is the catalyst that will set it off.