Yeah, it's possible to modify physical theory in a way that is compatible with our current bounded observations, that allows FTL with higher energies then ever controlled or perhaps ever practical to create.
One of SH's hobbyhorses is that the Universe has no obligation to conform to the most elegant symmetrical theory. (See C/P/T symmetries.)
it is reasonable to "rule out" (read: effectively treat as not true, see Russel's Teapot) any theory which lacks sufficient evidence to treat it with any greater weight
One of SH's hobbyhorses is that the Universe has no obligation to conform to the most elegant symmetrical theory. (See C/P/T symmetries.)