It's funny and a little sad: Shows that aren't big franchise shows like Farscape, Lexx, NuBSG can get away with stuff like this where they never explain their tech and just have them as background plot devices (if even that). But try something like in Trek where they have an FTL engine but never explain it, crucifixion.
That said, I loved Farscape.
I think that's because people sometimes act as if the science of Trek is more well thought out than those shows. For example, sometimes you hear Star Wars is "space fantasy" and Star Trek is "science fiction".