Real Science Radio hosts Bob Enyart and Fred Williams discuss excerpts from the Veritasium/Derek Muller YouTube video, "Why no one has measured the speed of light". Einstein stipulated that the speed of light in one direction is the same as light's roundtrip speed, decreeing this by definition, rather than measuring it, because measuring the one-way speed of light has been technically impossible and many argue that it is even theoretically impossible. Einstein then observed (as discussed on Veritasium) that the one-way speed of light might be infinite in one direction and half its agreed-upon speed in the reverse direction, averaging to what we refer to as c, or about 300,000 kilometers per second. * RSR's One-Way Speed of Light Series: - Stretch Cosmology Pt. 1 - Veritasium, Lisle, and Light's One-Way Speed Pt. 2 (this show) - RSR's One-Way Speed of Light Experiment Proposal Pt. 3 * Next Series: - RSR's Solution to the Double-Slit Experiment  Astrophysicist Jason Lisle uses this to negate the atheists' objection to a young earth, that light from distance stars could not get to Earth in less than 10,000 years, by pointing out that the light could be traveling at infinite speed, and arriving here from the most distant galaxies instantly, so that we observe the heavens in real time. This is Dr. Lisle's Anisotropic Synchrony Convention. The the guys ask listeners to try to falsify a diagram on a suggested experiment for measuring the one-way speed of light, at rsr.org/stretch#one-way.