3 ms·
Does the machine have to be the source of the acceleration, or would ~any gravitational force count?
by maxerickson 3y ago
Does the machine have to be the source of the acceleration, or would ~any gravitational force count?
- btilly 3y agoWhen you bring in gravity, you bring in general relativity. And now the phrase "at the same time as" becomes an entirely arbitrary choice of coordinate systems. So it becomes complicated. But as long as FTL goes forward in time by some unique global definition of time, there is no causality problem.