33:54The Speed of Light Was NEVER About Light. Here's Why!
An argument that the most famous constant in physics is misnamed: c was never a fact about light, it is the fixed exchange rate between space and time, and light merely has no choice but to run at it. The case opens with GW170817, where gravitational waves and gamma rays from a neutron star merger 130 million light years away arrived 1.7 seconds apart despite sharing no mechanism, then walks back to Maxwell, who assembled the number from two vacuum constants measured with charges and coils and no lamp anywhere. The centerpiece is one picture: everything carries an arrow of fixed length through spacetime, and the only freedom is how much of it you aim into time versus space. Time dilation, the twins, the speed limit, light cones and E = mc squared all fall out of that single shape, with muons, the GPS clock budget and the 1983 redefinition of the metre supplying the hard numbers. Unusually, the video stops midway to name its own picture as contested, quotes Epstein calling it a good myth, and hands over the rigorous one line identity underneath so you can check the rest.