Gilphon

Because she's talked about going into Shadesmar and talking to spren there.

I mean. The same way anyone else would. Sneaking it in at some point.

Somebody on the Tor.com thread raised the possibility of it being one of the Heralds. Which does kind of fit. The implication that the speaker believes herself to be a better authority on spren welfare than the Honorspren; the extreme but not entirely illogical viewpoint, the hypocrisy of using a fabrial to denounce fabrials, the secrecy...

Because @Oltux72 was probably right that it belongs here rather than chapter discussion thread, here's my current model: Iron and Steel make a fabrial attract or repulse the spren's attribute Pewter makes the fabrial convert stormlight into the attribute Bronze makes Alerter fabrials, but only with Heliodors for reasons we still don't understand. Something about the difference between detecting the use of Investiture and detecting the presence of people, I suspect. Aluminium blocks off the effect, and also does whatever that technobabble Navani had about using aluminium in her airship meant. Diminishers, Conjoiners and Reversers are still mysterious to us. I understand the logic behind suggesting tin for Diminishers, but disagree; Tin has never acted as a reverse of Pewter that directly before. Copper and Tin presumably do things that they know about but Navani hasn't told us yet. Zinc and Brass affect how strongly any of the above effects manifest. So Pewter creates heat, but zinc and brass are temperature controls. Steel can draw in water, but Zinc and Brass control how quickly the water moves. And so on.

Okay, okay, how's this for a model: Iron and Steel make a fabrial attract or repulse the spren's attribute Pewter makes the fabrial convert stormlight into the attribute Bronze makes Alerter fabrials, but only with Heliodors for reasons we still don't understand. Something about the difference between detecting the use of Investiture and detecting the presence of people, I suspect. Aluminium blocks off the effect, and also does whatever that technobabble Navani had about using aluminium in her airship meant. Diminishers, Conjoiners and Reversers are still mysterious to us. I understand the logic behind suggesting tin for Diminishers, but disagree; Tin has never acted as a reverse of Pewter that directly before. Copper and Tin presumably do things that they know about but Navani hasn't told us yet. Zinc and Brass affect how strongly any of the above effects manifest. So Pewter creates heat, but zinc and brass are temperature controls. Steel can draw in water, but Zinc and Brass control how quickly the water moves. And so on.

Implicitly she does, by calling zinc and brass "The two metals of primary significance", and saying that augmenters "tend to use Stormlight more quickly than other fabrials", implying that augmenters are not what she considers to be normal Fabrials. Which can only mean that zinc does something more generally useful than Pewter. But, under your interpretation, what exactly would be the point of using zinc without pewter? Like you don't need to care about how strong the expression is if the expression isn't being projected. That would make pewter the primary metal and zinc the variant, but Navani just told us the opposite is true.

No, see, Navani's talking about Augmenters as a more stormlight-intensive variant of Fabrials. If they didn't project their attribute at all without Pewter, then Pewter would be a basic component of most Fabrials. One of the primary metals that make Fabrials useful. But that's the role she said Zinc plays, implying the other metals are more specialized.

So the views expressed make me think Spren, but the communication method makes me think Sleepless. The speech patterns don't match Sja-Anat, and the communication method seems implausible of the Sibling and frankly insane for Venli.

Wait, so what's the difference between Zinc and Pewter, in the context of Fabrials? Pewter makes the spren 'express its attribute in force', whereas Zinc 'allows to control expression strength' by 'causing the spren to more strongly manifest'. I don't see how those things are super different. But Navani seems to be treating zinc as one of most important metals for making fabrials work, and implies that pewter is more specialized. There's a distinction I'm missing here. Regardless, we're now up to six metals that imitate their Allomantic function in Fabrials. Specifically their Allomantic function, not the Feruchemical or Hemalurgic one. Really eight, since I doubt iron would break the pattern and tin is very similar in all three metallic arts. I feel like that's enough to prove the point, given that most of one that's left are ones that Navani probably wouldn't be working with. Like it's basically just copper and gold that we're waiting on confirmation for now. Navani doesn't recognize the metal in the new Fabrial. One of the weirder Allomantic metals, like chromium, or Odium's godmetal? I wish we'd been told what colour the fabrial is; that would really help narrow it down. It seems like ancient Fabrials were constructed using a different principle, even if their function is the same. I wonder if this person threatening Navani would feel the same way if she was using the ancient method? It sounds like the Honorspren are uncomfortable with what Navani's doing, but aren't going as far as to condemn it outright. That's a stance that leaves open the possibility of spren with more extreme views existing. Are we dealing with the spren equivalent of an animal rights activist?

The WOB is saying she hasn't figured how to go from Shadesmar to the PR; she can go from the PR to Shadesmar just fine. Also, in Oathbringer, when asked about why she took so long to get back, she talks about how travel to Shadesmar is easier and says that she needs to find a place where the realms were closer together in order to get back. Which certainly sounds like she had to use a Perpendicularity. I suppose it's theoretically possible that she could've transitioned somewhere other than the spot in the middle of nowhere where Hoid was hanging out and then teleported to Hoid, but that would be a very strange thing for her to do, given that she didn't even know Hoid was there.

We actually have a WoB saying that although it's possible for Transportation to do that, Jasnah doesn't know how: https://wob.coppermind.net/events/398-prague-signing/#e13196 So Honor's Perpendicularity was the only thing that could've been.

So the Honor's Perpendicularity being the Highstorm is an appealing idea, but there's nothing in the text that actually suggests that- we see Jasnah enter the PR from what must be Honor's Perpendicularity at the end of Words of Radiance, and she was just randomly in the middle of nowhere, without the Highstorm being anywhere near. Plus, when they're trekking though Shadesmar is Oathbringer, they pass through the Highstorm several times without even discussing the possibility to trying to use it to cross over. And the Highstorm isn't particularly dangerous in Shadesmar. And certainly Dalinar didn't summon the Highstorm when he summoned Honor's Perpendicularity.

I really think that resemblance to chromium is purely superficial. Like chromium would remove the Stormlight from within Kaladin and the Voidlight from within the Fused, and only affects things directly in contact with it. The Fabrial surpassed the connection between Syl and Kaladin, didn't affect the Fused at all, and covering a wide area. Like there's basically nothing in common with chromium aside from the general anti-magic thing. And also there's no real reason to believe that they're discovered chromium in Roshar. That stuff isn't exactly easy to get ahold of without modern refining techniques.

That's... well, I would describe that as a hypothesis worth testing. I think the fabrial was specifically targeting the bond between spren and human, which is why Syl says she feels faded, Kaladin can still feel Stormlight inside, and the Fused can still use his powers. Which is not a completely implausible thing for copper to do if combined with the right spren. Like it's dampening Syl's ability to sense Kaladin, or something like that. I imagine the type of metal used would be something Navani could figure out pretty quickly, so hopefully we'll get to see that.

No, no, it was said that the Radiant had been unable to heal her because it had been too long since the injury, not because it had become a part of her identity. They never would've said the identity thing, because they don't understand that mechanism in-universe. Which strongly implies that Progression cannot heal long term injuries. And later on, we see that when panicked, Rysn instinctively tries to stand up, demonstrating that she has not internalized her injury; her instincts are still behaving as if she could walk. Which is really the smoking gun for me that Progression is not identity-based. Also- there was that moment where Lift used Progression to make seeds grow into vines instantly. Stormlight healing can't do that.

So according to Hessi, Nergaoul, Moelach and Ashertmarn are the only mindless Unmade. Hessi did make it clear that she knew next to nothing about Dai-Gonarthis, so we can't be 100% confident that she's right, but she did suggest that it was responsible for the destruction of Aimia, which doesn't sound like Mindlessness to me.

So I think it's clear that something supernatural is going on with Moash's mental state. I had been assuming it was being directly done by Odium, but Dai-Gonarthis being responsible also makes sense. However, I feel pointing out that the first place we saw Moash talking like this was Kholinar. So if it's Dai-Gonarthis' doing, that would mean there were four Unmade doing stuff in Kholinar. That's a lot of resources for Odium to throw at a single city.

Random thoughts: And that gives us a fourth metal that imitates its Allomantic effect when used in Fabrials. Interestingly, this suggests that an Alerter isn't a true type of fabrial, but rather an add-on; you wrap a fabrial in bronze to give it an alerter effect in addition to whatever it was already doing. There's probably only so much room to apply metals to a single gem, though, so you might have to give up the 'volume controls' offered by Zinc and Brass or the 'off-switch' provided by Aluminium to make that work. I hope Navani's about to start talking about why the type of gem is important. Like, we've always known that the type of gem is important, but the only information we have about why is the soulcasting properties, which tell us nothing about what's going on in other Fabrials. Like why do spanreeds require rubies? Why do chasmfiends need emeralds? I had been assuming that the Warcamps were built by the Listeners, but Shallan was just thinking that they were far older than that. And certainly those little carvings of the Silver Kingdoms doesn't seem like the kind of architectural feature the Listeners would've constructed. It implies, to me, that the warcamps predate the shattering of the plains. Which... what? What is going on here? If Kaladin found that offer tempting, he's clearly in extremely bad shape. Renarin using what appears to be non-corrupted Truthwatcher Illumination! Man, his powers sure don't stop being confusing.

I have suspected for awhile that the surge of Progression operates on a totally different principle from Stormlight healing. That progression is about accelerating natural growth and regeneration, whereas Stormlight restores a person to how they think they're supposed to be. Which would explain why time since the injury is a factor in progression, but it isn't with Stormlight.

This is sort of exactly why I'd prefer Gaz to Ishnah. If it's Ishnah, well, then she just wasn't the person we thought she was. But I can totally see as Gaz as capable of backsliding and making a mistake like this- surely the Ghostbloods can't be all bad if Shallan is working with them, he'd tell himself. And surely somebody like Ialai deserved what she got. Gaz being the mole leads to drama and character development, but Ishnah's just 'welp, I guess we shouldn't have trusted her'.

So the Transportation Fused Kaladin's been fighting has actually been reminding me of Thunderclasts a lot. Like what with the whole leaving his body and turning into a point of red light thing. Which is not to say that I think that guy could possess stone and become a Thunderclast if he wanted to, just that he has a similar feel to them. But I do think the Thunderclasts are a different things from the Fused. Their entire gimmick is different, and I feel like if they were dozens of Thunderclasts out there that would've come up before now. (note, btw, that the term 'Fused' is only ever used to refer to one who is currently inhabiting a Singer body. They're referred to as Voidspren when they're bodiless; I believe the idea is that they're technically a fusion of Voidspren and Singer. So by that standard, Thunderclast are by definition not Fused) Also: I suspect that Adhesion is the Surge that the Fused orders are missing. Which would imply that the Abrasion ones are Dustbringer equivalents and the Illumination ones are Truthwatcher equivalents. Or possibly any equivalencies that exist between Fused and Radiant orders are just rough approximations and we shouldn't be looking for a way to correlate them all. Like the Windrunners don't have any inherent preference for one-on-one fights and the Heavenly Ones don't seem to explicitly focused on protection, but they're considered equivalents became they both use Gravition and make a point of fighting cleanly.

So, I mean, your logic is basically sound, but I like Ishnah and don't want her to be a mole. What about Gaz? Brandon's hinted once or twice that he has a backstory we still don't know.

Having a mole remove the dart seems overly complicated. If there's a mole in position to do that, surely it would've been a lot easier to just have the mole kill her. And they could theoretically use some gimmick to remove a dart, but why bother? It's not like anything they do could prevent Shallan from believing the Ghostbloods were responsible. And it would just add so many ways things could go wrong.

I don't think a dart is gonna make enough noise to be noticeable. It's not like the room was silent or anything. But a dart is gonna be visually noticeable now that they're checking her body for entry wounds. Like, if it was a dart, we should find that out in the next Shallan scene, and it's not gonna be much of a mystery.

So, to me, this is a more persuasive argument than the logistics of her fiddling with the needle. Like 'Shallan has a hidden fourth alter that kills people that the others want to keep alive' is very Hollywood DID, which is exactly what Brandon has said he wants to avoid this book.