difference between acceleration and moving.
IIRC, as a particle with mass accelerates approaching C, it's mass would approach infinity, making the energy requirement for continued acceleration also approach infinity.
"things" without mass would not have that problem, would they?
also, nothing I understand of the theory suggests that there cannot be things, particles, waves that simply move faster than C, just that they cannot accelerate from below C to or beyond C.
IIRC, tachyons supposedly just move faster than C, period.
The thing that makes particles accelerate is electromagnetic forces. This is essentially light itself. Of course nothing can move faster than the speed of propagation of that which makes it move. The mass, the resistance to further acceleration, would appear to grow infinitely. We might create another kind of force that propagates faster, and if it interacts with matter we might then move faster than the speed of light. It wouldn't look like we were moving faster than light anyway.