Please read the last line of my original post.
> If you're not drawing the conclusion they actually existed, what conclusion are you drawing?
I am saying, that the description given in the text is too specific for it to be dismissed right away. And even if it is hokum, then the sheer level of imagination of ancient civilisation to mention flying vehicles, missiles, teleportation, body preservation and test-tube baby is appreciable. It will be good to know what type of civilisation was that that was able to imagine these advance concepts.
> Since we know where (fairly precisely) these things took place, we should have significant archaeological evidence for them.
Sure, I am all for scientific evidence. In fact I would like to see that it is either supported or refuted with evidence. From some of the comments it looks like for rejecting a hypothesis no evidence is required, but for supporting it evidence is demanded. If there is no evidence to either support or refute it, then the matter should be inconclusive rather than concluding it either way.