>>15627491It is easier to stop time than traveling back or forward in time.
Retrocasuality allows a Vaidman's probe to traverse that region of spacetime where Time is frozen, though for a brief time. The time required for the hologram to readjust itself to the new situation, one that is outside the many-worlds solution and that needs be incorporated into that many-worlds solution. From a defense point of view the question is if that time interval is enough for us to hit the hologrammers.
It is possible to freeze the world, if you manage to measure it just right.
The presence of a massive black hole is shown by both a void in the region of the Universe being observed, plus the observation of gravitational effects which correlate with a specific distribution of matter. The presence of a region of the Universe where Time has frozen is shown by the observation of a huge void in that region, with no gravitational effects. It is a region of space with a complete absence of energy and matter, and no gravitational effects at all.
Freezing Time in a region of space means loss of information for those observers inside that region. This does not mean they cease to exist, it only means they are frozen in time. For an external observer, the region appears as a complete dark void (photons are also frozen). For an observer at the edge of the hologram, the region is simply a region where Time is stopped for all objects inside it, except him.
Stopping Time gives you a tactical advantage, the advantage of planning ahead how to handle a given hostile situation, the advantage of moving your offensive and logistics vectors to the vicinity of the region such that when Time is resumed you have resources available that you lacked before freezing Time. But once Time is resumed, you still need to fight the situation. The outcome of that combat is still uncertain.