Not enough disagreement in the transcripts to form camps. These are the positions taken by people with demonstrated expertise on this topic first, then by how many people heard them on it, then by VoiceRank.

Neil deGrasse Tysonhost96

Backwards time travel is likely physically impossible because it would lead to causality paradoxes that would prevent the traveler from ever going back in time.

“you can't go back in time and prevent your parents from meeting then you would have never been born to have gone back in time to prevent your parents from meeting”

StarTalk · Oct 2020 · 1 episode · 418K views on this topic

Positions are extracted from transcripts by a model and may misattribute who said what. Every quote links to the episode it came from.