I've always felt that what we used to call the Shannon Limit (more accurately, the Shannon-Hartley Theorem: https://en.wikipedia.org/wiki/Shannon%E2%80%93Hartle

I've always felt that what we used to call the Shannon Limit (more accurately, the Shannon-Hartley Theorem: https://en.wikipedia.org/wiki/Shannon%E2%80%93Hartley_theorem https://en.wikipedia.org/wiki/Shannon%E2%80%93Hartley_theore...) was more useful in conversations like this than any reference to the speed-of-light or motion of particles in a medium.