Garrett Lisi is a theoretical physicist known for his work on the "Exceptionally Simple Theory of Everything," which proposes that the E8 Lie group can describe the fundamental forces and particles in the universe. Lisi is also an avid surfer and has gained attention for his unconventional approach to physics outside of academia.

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LINKED MENTIONED:•⁠ ⁠Garrett Lisi’s TED talk on his theory of everything: https://www.youtube.com/watch?v=y-Gk_Ddhr0M•⁠ ⁠Garrett Lisi’s website: https://li.si/•⁠ ⁠Garrett Lisi’s papers: https://li.si/Physics/CV.html•⁠ ⁠Peter Woit on TOE: https://www.youtube.com/watch?v=9z3JYb_g2Qs•⁠ ⁠Garrett Lisi’s paper on triality: https://arxiv.org/pdf/2407.02497

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TIMESTAMPS:00:00 - Intro01:24 - Garrett’s Ted Talk and Background08:36 - Mystery of Spinors10:13 - Garrett Poses a Physical Problem12:22 - String Theorists23:48 - Triality26:13 - Garrett’s Top Points in His Talk28:42 - “String Theory’s the Only Game in Town”32:10 - Garrett’s Presentation Begins: Unification38:22 - Spinors vs. Fermions45:56 - More Particles in Higher Gauge Groups48:42 - Threefold Symmetry54:00- Group Theory Overview59:37 - Quaternion Group01:04:14 - Pin Group01:10:25 - Spin Eigenvalues01:14:45 - C, P, and T01:22:12 - Biquaternionic Spinors01:25:55 - Quaternion Triality and the CPTt Group01:34:14 - Multi-Generational Fermion States01:37:20 - Fermions in Exceptional Unification01:42:12 - Exceptional Magic Square01:44:22 - Outro / Support TOE

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