Btw, the big bang theory is not something personal from Sean Carroll. He might talk about it (a lot), but a lot of scientists talk about it, and it's a theory t

Btw, the big bang theory is not something personal from Sean Carroll. He might talk about it (a lot), but a lot of scientists talk about it, and it's a theory that has evolved over the last 100 years by thousands of scientists around the world. So in that sense it's not really "Sean" against another guy with an alternative theory. No it's 100 years of worldwide collaborative science research. And yes it is an incomplete theory, like all the theories we currently have. But it is currently the theory that matches our observations in experiments the closest. It could always be that we're on the wrong path, and that a completely other paradigm is necessary. And it is good to be open to such posibilities and to think about it. But as long as an alternative theory doesn't do a better job at predicting the observations we get in experiments, you can't dismiss the current theory.