Hi, I can't find the post easily at the moment because I'm on mobile, but in reference to Grandpa Harley inventing the Fenestrated Walls, that is not actually entirely true? As I recall, he actually stole it from Jack's cubicle of vigilance! So if Jade isn't just assuming that Grandpa made it, then his are only modeled after the one he took from Derse.
Okay.
-Mod L