An extraordinary misunderstanding lies at the heart of relativity, born in the overlooked distinction between the empirical verifiability of the two-way speed of light and the presumed isotropy of one-way light speed. What is this distinction exactly, and how might making it explicit shake the foundations of our entire paradigm of modern physics? Thank you for watching and please consider supporting us on Patreon! https://www.patreon.com/dialect_philosophy References and Sources: Einstein, Albert. (1905). "On the Electrodynamics of Moving Bodies" https://www.fourmilab.ch/etexts/einstein/specrel/specrel.pdf Reichenbach, Hans. (1927). "The Philosophy of Space and Time" https://altexploit.files.wordpress.com/2017/09/hans-reichenbach-maria-reichenbach-translator-the-philosophy-of-space-and-time-1957.pdf Mansouri, Reza & Sexl, Roman. (1977). "A test theory of special relativity: I. Simultaneity and clock synchronization." General Relativity and Gravitation. 8. 497-513. 10.1007/BF00762634. https://www.researchgate.net/publication/226579519_A_test_theory_of_special_relativity_I_Simultaneity_and_clock_synchronization Anderson, R., Vetharaniam, I., & Stedman, G.E. (1998). "Conventionality of synchronisation, gauge dependence and test theories of relativity." Physics Reports, 295, 93-180. http://www.terra32.it/trusso/varie/AndVetStedPhRep(1998).pdf Contents: 00:00 - Intro 01:06 - The Caveat to Einstein's Postulate 03:33 - The One-Way Speed of Light Problem 08:33 - The Epsilon Value 11:23 - The Loophole 14:07 - Invariance of Laws of Physics 16:17 - Absolute Simultaneity/Anisotropic Light 18:16 - New Directions