User blog comment:Zippertrain85/The reasons why Serana is not from the First Era./@comment-3217145-20130508163342

Fourth: Mehrunes Camoran, Molag Markarth, Movarth, Meatpie, whatever :P Too many M words.

It doesn't matter how hard-to-believe you think it is. We can't judge that unless we have actual information and evidence to refute it. Every indication is that, no, technology doesn't advance. Look at "ancient" weapons, tools, jewelry, etc; if anything, the older something is, the more advanced it is (Nirn works like real-world legends, not real-world logic). Even with crossbows in hand, people couldn't come up with the Dwemer technology to make them without instructions, and it's been millennia. It's been 200 years since Oblivion, and absolutely nothing has changed anywhere, technologically; ancient artifacts are still better than anything anyone makes in the present. The Imperial City is full of arches and gigantic curved masonry and statues and a huge freaking bridge, all made by the Ayleids in the Merethic Era, and of exactly the same quality (if not better) as modern techniques. Whether the nations got along doesn't matter that much; the technology wasn't rare in the slightest, Harkon didn't invent it anyway, and individuals from those nations could decide not to follow their race. People like Harkon, who eventually chose to contact Molag Bal and become a vampire, wouldn't have any loyalty to some petty mortal nation to begin with.

And it's not like vampire clothing is all that complicated anyway. You wouldn't need techniques much different from whatever made Miraak's clothes. Given the style and enchantment, it seems likely that Molag Bal or some other magic-user just conjured them out of bat wings and virgin blood and pure hate or something.