On Tue, Feb 06, 2018 at 03:38:19PM -0500, Caleuche wrote:
> The thing is that Traveller explicitly excludes faster than light
> communication by any means other than jump drive

Not quite, in anything I've read.  Just that if it exists, it's
impractical over interstellar distances.

For example, if nuclear explosions make enough of a tachyon/jumpspace
"blip" that specialized sensors can detect instantly at (say) a few
million kilometres, then in theory you could build a chain of millions
of nuclear weapons from one star system to another to send a few bits
of information faster than a starship can get it there.  But nobody
will, and it would make no difference to the assumptions underlying
Traveller's setting.

- Tim