If the Planck length is Lorentz-invariant but macro-scale objects are not then does that not imply there is a special universal reference frame against which to measure velocity?
If I have understood the article correctly one would be able to measure the length of a spaceship relative to the Planck length and deduce velocity, entirely locally (i.e. onboard the spaceship).
This is a fundamental departure from general relativity which says there is no special frame of reference.
If I have understood the article correctly one would be able to measure the length of a spaceship relative to the Planck length and deduce velocity, entirely locally (i.e. onboard the spaceship).
This is a fundamental departure from general relativity which says there is no special frame of reference.