Did he mischaracterize the Borde-Guth-Vilenkin theorem? I watched his debate with William Lane Craig and as a layman it sounded like he btfoed Craig but after reading this article I'm not so sure but I have 0 knowledge on the topic to know who is right.
https://freethinkingministries.com/sean-carrolls-dishonesty-the-debate-of-2014/
https://freethinkingministries.com/sean-carrolls-dishonesty-the-debate-of-2014/