I came up with my theory of light during a mushroom trip: the speed of light varies when penetrated by gravity waves. This entry in wikipedia is incorrect:
The speed of gravitational waves in the
general theory of relativity is equal to the
speed of light in vacuum,
c.
[1] Within the theory of
special relativity, the constant
c is not exclusively about light; instead it is the highest possible speed for any interaction in nature. Formally,
c is a conversion factor for changing the unit of time to the unit of space.
[2] This makes it the only speed which does not depend either on the motion of an observer or a source of light and/or gravity. Thus, the speed of "light" is also the speed of gravitational waves and any other
massless particle.