Pretty sure this is the right place for this, and I am a little surprised no one else (that I have seen) has brought this up yet. There has been alot of talk of the Vajra being some Protoculture based defense system, weapon system, what have you, because of the similarities to the APHOS in Zero. But at the beginning of episode 6 (just grabbed the Shinsen release, so it was fresh in my mind) it's stated that fold "Fault Surfaces" (not "dislocation", the text is actually in the animation) and energy consumption are limiting factors for all Protoculture derived civilizations. But in episode 7 we see these are definitely not limiting factors for the Vajra. If they were Protoculture based, and this is a technological limitation that they did not conquer, would this not be an issue for them, as well?