It's widely accepted that c0, the speed of light in a vacuum, which has a refractive index of 1.0, is 299,792,458 meters per second (1).

The speed of light is widely seen as finite and the upper limit of any movement of anything with a positive rest mass. Most texts state with absolute conviction (something that is supposed to be unattainable in science) that even in experiments where the speed of light is exceeded, since the group velocity of the wave carries no information (wait, what?) it's not really occurring.

Science also assumes that a vacuum is the ultimate medium through which light can travel, which is why the speed of light (aka c0) is always quoted as measured in a vacuum.

I predict that by the end of 2015, subject to the end of the world later this year, experiments in superconductivity will show that light passing through a superconductive field having a refractive index of less than 1 will result in light exceeding c0, until that light encounters another field with a refractive index of 1 or more.

I also predict that we won't know what the hell to do with this, since CPU processing and memory access can't currently handle information at even c0 speeds, and passing information across the superconductive substrate at a refractive index of 0.9999999999 will cause a backlog of information at the CPU or memory controller, negating the benefit.

Nonetheless, the speed of light will be broken, causing either (a) the opening of scientific minds and the cessation of arbitrary unproven limits to fit mathematical models or, most likely, (b) the redirection and application of millions of man hours of the greatest minds in science to disprove this finding in order to preserve the status quo.

What say you?

References : (1) http://en.wikipedia.org/wiki/Speed_of_light