Read other letters about this article
The idea of very different technologies co-existing in human civilization is not terribly far-fetched at all, and reminds me of some of the discussions that wrapped around those few episodes of "Firefly."
Our military has submarines with nuclear cores that can travel for years without stopping. Meanwhile, many in the world must travel by horse, donkey, camel, or on foot.
Does anyone honestly think that if we find a way to bend or jump through space that older technologies will suddenly vanish?
Lastly, the FTL drives on this show require a rare material called tyllium that is difficult to find and even harder to refine. It's not the sort of thing that would lend itself to every day use.