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It's mentioned somewhere in an interview or annotation. I guess it would probably have tagged along. Regardless of any Cognitive or Spiritual aspects, there would be a physical connection, and Preservation and Ruin seem very heavily slanted towards the Physical.

They actually did have birth control, hence how Vin managed to remain slender for the entire trilogy.

The visions indicate that the One Power will be functional after the Last Battle, assuming of course that the Dark One loses. Though it might fail temporarily partway through, via Rand in a circle of three using literally all of it.

Pulsers have a larger area of effect and lower consumption but less extreme time gradient than Sliders, though I think x8 for Sliders is a severe underestimate for the high-end given how Wayne basically freezes time for a good deal longer than eight seconds on multiple occasions. Anyway, the big question is whether burning cadnium to slow time for the crew would slow the vessel relative to normal time. Essentially, if the Pulsers made four outside years into one inside year, would that mean they'd complete a four-year journey outside in one apparent year, or would they complete the journey in sixteen outside years and four apparent years? From what I can gather from Brandon quotes and some earlier discussions, Allomantic FTL works via cheating with bubble exits, because leaving or entering a bubble actually alters kinetic energy.

I imagine that if Jasnah's first attempt fails, she's bright enough to turn the air around him into rock or fire instead of trying another direct Soulcasting.

I think that a Shardblade might be able to unmake Nightblood if Nightblood isn't being wielded at the time, though possibly with extreme difficulty. At a guess, it would be like cutting a human, but there's a slight tug of resistance when slicing people and Nightblood has a thousand breaths, which probably comes out to a lot more spiritual power than a human, though I'm not sure exactly how much more. However, if someone is holding Nightblood at the time, the stock of breaths they're imparting to the sword would likely make it more difficult or even impossible. Also Nightblood might kill the Shardbearer by simple proximity if actively fueled.

I doubt burning the God Metals would alter ability with other magic systems. Using them in metal-based variants of their source's magic system would probably do that, but in Allomancy they'd probably have some kind of super effect like Atium.

Odium splintered Devotion and Domination before the Elantrians even found the city. The Reod happened much, much later.

Note that it mentions a distant sun shining in a black sky. I think that it's of particular note because it's not like the others, it's a man who is actually talking about his present situation and seeing into Shadesmar.

The Stonewards abandoned their Oaths at Feverstone Keep with the Windrunners. They're the orange Plate ones.

Avi's visions included one where the White Tower had recently fallen, and mentioned the Black Tower was destroyed years earlier and the men forced into a guerrilla war. Granted, it's possible they had been united under a joint leadership council and dreamspiked themselves in to hedge out gateway attacks, preventing Black Tower refugees from regrouping at the White Tower, but they apparently didn't go coed. It could be his demands to the Seanchan: 1. Dragon's peace in general, 2. no leashing members of either Tower or Wise Ones (No way are they going to give up the a'dam entirely), and 3. release the captured Wise Ones and Aes Sedai (since Avi's vision indicates that's the original causus belli with the Seanchan after Fortuona dies) Either Min or Fortuona's Voice/bodyguard, either of whom would probably be mortified by the attention.

I doubt that the Parshendi depend on gemstones in beards for any of their attributes. Half of them don't even have beards.

Modern society predicts the future, too. The Stormwardens are noted as not being entirely reliable, and they calculate storms well in advance. That implies that they're using fairly mundane methods of predicting the behavior of a complex system. If the Shards are actively controlling the Highstorms, they'd be entirely unpredictable, especially with precognition. I wrote a thread on this a while back, but basically in the Cosmere, using precognition to predict the actions of someone who is predicting your actions with precognition pretty much instantly becomes worthless for ordinary humans. When two people are using it, Atium produces a large enough shadow cloud to overwhelm people benefiting from its mental enhancements, and it only looks a second ahead at most. If a Shard, with their massive future sight and capacity to usefully interpret the huge decision trees, were actively controlling the Highstorms, there's no way Stormwardens could use future sight to predict them with any reliability. If they're not being actively controlled, future sight would be perfectly accurate.

Tuon would probably use a different phrasing, I feel. Amys could have been discussing balefire. Although it is known to have collateral damage to the Pattern, I could easily see people planning to use it during the Last Battle for taking out powerful Shadowspawn and Forsaken. But using balefire at the Pit Of Doom would probably have rapid and severely deterimental effects far in excess of any previous uses. Plus, I don't think the Pattern is in immediate danger of collapsing even if all the channelers on both sides began using balefire indiscriminately. That was essentially the situation for a substantial chunk of the War Of Power, and reality only almost collapsed even though there were many more channelers with lots of angreal. Even the obliteration of Graendael's palace would have less impact than destroying entire cities. Admittedly, it's also possible that a "benifical" weave such as some form of healing has a horrific unintended consequence. One that springs to mind is the saidin-detecting weave developed in KoD, which might interact... poorly with Myrdraal-turned channelers. (what ever did become of that, anyway? It doesn't seem to have been brought up since).

I think most of that is from the Guide.

Stormwardens are weathermen who use Glyphs as a pictographic writing system. I seriously doubt that their meteorology has any magical component whatsoever, although the fact that they don't need scribes for long-distance communication, the way the general populace fears them and the likely result of them becoming socially isolated from nonmembers, as well as apparently being the only truly transnational organization (the Ardents are under the temporal and religious authority of their brightlords, at least theoretically, and have been since Sunmaker) does lend itself to some sort of massive conspiracy. Actually, I wonder if the Stormwardens are a unified organization. I've been assuming they are, mostly because creating the calculation tables and modifying glyphs into a writing system seems like it would require a joint effort by a lot of people and be fairly difficult to learn, but they might just have some colleges like surgeons on Roshar do. Regardless, most people are afraid of them because no one else understands what they do, and because they edge towards violating Vorin gender roles. It's kind of like why an angry mob showed up outside Kaladin's house one night.

I think it's important that the investiture be used to reinforce the object against damage. Otherwise all fabrials would resist Shardblades. That doesn't necessarily mean the actual structural strength of the Shardplate/Half-Shard is what stops the Shardblade, though. Plate isn't impervious to being whacked with hammers, but can stand up to repeated Shardblade strikes even though they shear through stone and mundane armor like air. I think being designed to resist damage makes the investiture capable of interfering with Shardblade strikes.

It's also possible that they're two different magic systems but natives of the area can use both. Shai believes anyone can use Forging if they learn how, though I'm inclined to suspect that only natives of the area actually can because Sel magic systems seem to work that way. So it's possible it's just that the two systems aren't mutually exclusive. Alternately, skeletals can be warded off or decieved in some manner not requiring bloodsealing with their creator's blood. Certainly they'd be of questionable use for confining Shai if she could hijack them and send them after a guard with a small blood sample. I would also note that the bloodsealer shows no evidence of being a Forger; Fra adds a third magic user to the incredibly high-stakes conspiracy to check over Shai's work instead of having the bloodsealer do it, or for that matter having him do all the work and dropping Shai entirely. And even if he weren't trusted with the plan to tamper with the stamp to manipulate the emperor or competent enough to construct the seal himself, none of the other arbiters has him checking Shai's work as part of the stated plan even though they're trusting him with confining her. Regardless, skeletals seem to be completely impossible through Forging. They're implausible, but it's more than just that; I think plausbility might be something that can be overriden by raw power like Allomancy's adherence to Newtonian Physics. Once a skeletal is finished, it still doesn't have any physical means of moving. There are no muscles for it to move with, it's just inflexible bone and connecting wiring. Transforming a human skeleton into a Chasmfiend would be incredibly difficult to impossible with Forging, but if you somehow got the stamp to take the resulting Chasmfiend would have muscles to move with. Skeletals do not have anything that would let them move, but they do so anyway. Forging changes things, but once stamped an object behaves in a manner consistent with physics. And the whole business with the blood ward and blood tracking just does not work like Forging does in any manner except having an inked stamp involved. Shai could sense him setting the skeletals on her, when Forgery altering unstamped objects is definitely not possible at Shai's power level and quite possibly not possible at all.

A stamp to turn something into a stamp.

Because mobile living bone is not possible. You could forge bones into a living creature, maybe, but without the intervention of magic bones could not become mobile semi-living creatures. People paint walls, so stamping a wall into being painted is possible. Forging a skeletal would be like stamping airplane wreckage and flying it around without giving it engines. Forget the history, that's not the problem, the result simply is not possible absent calling in another magic system. Also, the blood ward on the room and the blood-tracking are not really like Forging at all except for requiring stamps and "ink". At most, Bloodsealing is Forging things into having been affected by another magic system, unless Shai is drastically wrong about the underpinnings of her own magic system, which is admittedly possible. Shaizan threatened the Bloodsealer with a sample of his blood. She may have been bluffing, and furthermore the Shaizan stamp contains a history of becoming a fierce tribal warrior instead of learning Forging. The accuracy of the statement is questionable. Plus the blood would be unusable for Bloodsealing before he could repair his skeletals anyway. Shai was planning to get away clean while leaving behind the 26-hour old blood on the ward Also, bloodsealing requires the subject's blood, and the skeletals need the skeletons to be "intact", but not necessarily comprised of bone. Specifically, the ribs had been repaired. People can live and move with missing ribs. Oh, and Shai seems to be romanticizing the wall and window a bit. The stamps she made before noticing the stained glass would not have included it previously being a stained-glass window and hence not matched reality well enough. Likewise, the revised history for the wall to be painted was actually pretty simple and plausible; instead of a bedridden visitor painting the wall a floor up, he was put into the room and painted the wall in it instead.

Huh, the Parshendi don't seem nearly as well-off or confident as I had assumed. Given how carefully they had set up the whole situation and intentionally limited the deployment of their forces, I had figured they must be doing fairly well. This leads to the question of why they so deliberately and intentionally provoked the war, beyond just the assassination. Also, they've apparently lost a large number of Shardbearers, but the Alethi have only recovered a few suits at most and Saedeas has been repeatedly forced to withdraw rather than face them. So very many tactical questions. Why have they thrown away so many soldiers in suicidal attacks on Shardbearers instead of deploying their own as a group if they're doing so badly? Why the whole force-matching business? Also, apparently they're short on Gemhearts even though their numbers have dwindled substantially and they've got free reign over all the plateaus past the Tower. Though Dalinar might have changed that before this chapter took place. Heeyyyy... writing on paper is critical to the form research in some way. And specifically paper; they've got plentiful supplies of other writing surfaces they could use if it were just research notes.

Atium is a God Metal, and Malatium is an alloy of it. They're outside the main set of 16.

Well, yes, but I'm pretty sure that if they sent a huge number of Trollocs into the Ways at once, none of them would be coming out.

We might finally find out more about the influence of Shardworlds on magical focuses.

I think Shards can all do the same things, but Shardholders get changed by the Intent so they won't do all the same things. Granted, for long-term Shardholders of single Shards the distinction between can't and won't is academic, but Vin was able to intentionally kill directly with Preservation. Also, Ruin is about destruction, while Odium is about making people suffer. Preservation and Ruin were both fundamental forces, entropy and counter-entropy. Life and civilization require destroying things, breaking molecular bonds or tearing holes into the earth to extract metals. Preservation and Ruin needed to work together to make humanity, not merely because they could counter each other but because making them without the help of the other was impossible because the Shardholders conformed to the Intent of their Shards and were mentally incapable of doing it by themselves. Ruin tried to kill everyone, but they could not have existed without him. Odium is simply malicious. There are worse things than death, such as being tortured for eternity, and Odium is happy to inflict them. He's probably also more powerful because he didn't contribute to life in the same way as other Shards. They locked up their power in their creations, while Odium creates only for war. Ruin had put less power into humanity than Preservation, which is why the Atium gambit was necessary in the first place.