Causality coupled with special relativity states that no particle can travel faster than light.
Interpreting in terms of quantum mechanics, it means that dirac delta wave-function at x=a, can't convert to dirac delta wave function at x=b faster than a speed of evolution i.e. of a dirac delta function travelling x=a from x=b.
Isn't this the way we should interpret special relativity now? Thinking of the older results in terms of a newer framework, where the physical world we perceive is a shadow of the quantum mechanical wave-functions.
This can allow seemingly strange effects like entanglement to make more sense in a newer framework. We've constantly done this in the past when theories like SR & GR came out. Looking at the world through a new lens.