Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas AMA | August 2021
Aug 12, 2021
Dive into a thought-provoking exploration of vaccines, philosophy, and the universe's mysteries. The conversation touches on the allure of superheroes versus realistic figures, alongside a fascinating physics experiment bet. Discover the intriguing relationship between gravity and quantum mechanics, and ponder existential questions of consciousness and reality. The intrigue of black holes blends with the mathematics of music, while discussions on free will challenge our understanding of determinism. Engage with moral philosophy and the evolution of scientific thought as unique perspectives unfold.
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Bayesian Reasoning
- Consider all evidence when using Bayesian reasoning, not just evidence supporting your hypothesis.
- Even incorrect hypotheses can be supported by some evidence, so consider everything.
Dimensionality in General Relativity
- General relativity behaves differently in 2D space than in higher dimensions.
- In 3D spacetime, there are no gravitational waves due to the lack of Weyl curvature.
Universe Expansion
- Scientists don't assume constant universe expansion; they use general relativity and observations.
- Measurements of the expansion rate at different times reveal the universe's acceleration.