that's not entirely true. Non-einsteinian relativity allows for functions 'defined evewyhere' at once. An example is tangherlini relativity, which allows for anisotropy of the speed of light (and is not inconsistent with contemporary observations IIRC)....
Re:EmDrive study officially published
by Natanael_L on Sunday November 20, 2016 @11:45AM
(#12999687)
Preferred foliation is the term. Ctrl-F it here:
https://en.wikipedia.org/wiki/De_Broglie%E2%80%93Bohm_theory
Well, I was looking at that page too, but didn't bother to quote what it's called because the term doesn't say anything useful.
Re:EmDrive study officially published
by wuguhwpeiouhg on Sunday November 20, 2016 @03:28AM
(#12997896)
in his book on QM David Bohm gives a relativistic version of the pilot-wave theory
* caveat that it's not enough information to let you make any concrete predictions
Other afterthought: The pilot wave model is definitely not directly compatible with relativity, since it purports to have a function 'defined everywhere' at once, and the concept of 'everywhere at a moment in time' doesn't work in relativity. There are apparently methods of working around this, and they're apparently very complicated.