Disagree completely standard philosophical terminology is not necessarily descriptive of science, and I do not consider "Speed of light in a vacuum is a universal constant:" is not a truth claim as far as science is concerned. Scientific theories and hypothesis cannot be defined as true or false.
From:
Speed of Light May Not Be Constant, Physicists Say
Speed of Light May Not Be Constant, Physicists Say
"The definition of
the speed of light has some broader implications for fields such as cosmology and astronomy, which assume a stable velocity for light over time. For instance, the speed of light comes up when measuring the
fine structure constant (alpha), which defines the strength of the electromagnetic force. And a varying light speed would change the strengths of molecular bonds and the density of nuclear matter itself.
A non-constant speed of light could mean that estimates of the
size of the universe might be off. (Unfortunately, it won't necessarily mean we can travel
faster than light, because the effects of physics theories such as relativity are a
consequence of light's velocity). [
10 Implications of Faster-Than-Light Travel]"
Use of philosophical terminology in science, concepts of faith and belief are misleading and inaccurate. It actually encourages bogus arguments like those used by
@Lyndon,
@whirlingmerc and
@Revoltingest
This includes the ongoing problem of misusing words like 'fact,' 'chance' and 'randomness.'