Parallel Universes Emergence
Siraj explains how parallel universes in many worlds theory exist without being contained within space, but rather space exists within them. The lack of interference between descendant universes is a result of decoherence and entanglement, not the spatial containment of parallel worlds.In this clip
From this podcast

Mindscape Podcast
Mindscape Ask Me Anything, Sean Carroll | December 2022
Related Questions
What is space as discussed in the episode Sean Carroll: Quantum Mechanics and the Many-Worlds Interpretation | Lex Fridman Podcast #47 and the clip Hilbert Space Explained?
What is space as discussed in the episode Sean Carroll: Quantum Mechanics and the Many-Worlds Interpretation | Lex Fridman Podcast #47 and the clip Hilbert Space Explained?
Is spacetime emergent in physics as discussed in the episode Mindscape Ask Me Anything, Sean Carroll | December 2020 and the clip Time and Reality?