(June 21, 2014 at 7:26 pm)Cthulhu Dreaming Wrote:(June 21, 2014 at 7:21 pm)Heywood Wrote: If someone claims the speed of light changes over time, you really can't just dismiss it as poppycock.
They will, however, need to demonstrate it - along with the anisotropic speed of light folks.
There is nothing wrong with taking the position that, "as far as we can tell" the speed of light is constant over time. This is the position I would take until proven otherwise.