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For both Steel and Iron they will push and pull where the lines appear, which for all but the most skilled (and/or cognitively expanded perhaps?) will appear at the center of mass of the metal object. In most of the cases mentioned I suspect it's flying toward their center and they just catch it along that path, rather than literally pulling toward the Hands. That is possible per WOB but it's not common or easy, and for Lurchers especially it would open up a lot of strange Ripping-Apart questions.

And at the more comically useless end of the spectrum, the Kandra has to audibly shout orders at it's own skeleton to get it to move at all. I picture it devolving into that meme about the immaterial ghost shouting at its own zombie body fumbling around. K: "Yessir, I Salute You!" [thwack] Officer: "You...dont have to actually say it every time, you know." K: "Umm, Yessir. I'll take my leave, sir. About FACE! [Heel spin] Forward MARCH! [Starts walking]. Officer: "..."

As one example, Voidlight innately leaks significantly slower than Stormlight, so the Hybrids that have Voidlight might be similarly "sticky" compared to Stormlight.

Fair enough. The OP asked about Kelsier specifically so I didnt want to imply that what he's seen doing is only Steelpushing and some combination of that and Lurching.

Only thing I can think is that he was imagining more of an old-school flexing Catapult instead of a gravity-pivot trebuchet, given this old WOB. Tactically I think a Spren-Arrow makes way more sense, and a normal (or even Fabrial) Bow and the strength of Plate is probably all you need. With the Radiant as a Spren-arrow it would do spiritual Shardblade damage and be able to poof to spren-form and return for repeated shots (assuming the spren is a type that can fly). But Im not sure Plate-esk spren would get the spiritual damage aspect.

Fair enough, I'll pull the identifying bits form the WOB. My other point remains that Pulling Toward you is entirely common, just with a whole different (and often ignored) metal/misting, but in a Mistborn they synergize together for a whole lot of more flexible maneuverability.

Spren cant manifest as two separate object without significant painful damage to their soul. So they could be the Bow or the Arrow but not both, they cant manifest anything with actual moving parts (like a traditional gun), or matched dual-weilder sets of weapons.

Steel and Iron have opposite directions. And it is possible to push on individual parts of an object instead of it's center mass, it just takes more skill/effort. I tend to assume you could also move the force point to different parts of your own body, which would open a lot of ripping possibilities for Lurchers.

Well, it will have notably different properties as the other lights (since they seem to differ from each other in some basic behaviors) but it should be capable of fueling Surges since Stormlight, Lifelight, and Voidlight all can without apparent affect on the Surge itself. There may be something additional that can happen with the hybrid lights, and we may see something like that in the future with it and Towerlight, but it's hard to say at this point.

And the inverse can be done by Lurchers with iron, but are forced to swing more Spiderman style under metal building fixtures (it's mentioned that it annoys residents by constantly damaging the window frames etc they use. Having both options like a full mistborn can give you a whole lot more option than just either one, and somebody good enough can basically fly in circles if there's enough metal about.

This was an off-hand statement about cave detection in the sample chapters, but as an Instrumentation/sensor engineer it got me thinking about the actual technology needed. It's in my professional wheelhouse, so Im very interested if anyone has insight. Calling all Geologists: When exactly did the technology to detect actual caves and/or voids using "Seismic" sensors emerge. I know it had to exist in at least limited range as early as the Jurassic Park films, and some quick research shows significant research being done as early as WWII and limited success in the 70's. But as far as I can tell, in the technologic equivalent of Era2 Scadrial our Seismic sensors were limited top earthquake detection. Am I wrong about the RL history of that technology? Or is this an instance of Scadrial having a cultural focus on Siesmology the way they do on Metalurgy? Or might their sensors be based in the Metallic Arts? EDIT: Not sure if this really needs to be in the Spoiler section, so I figured better safe than sorry.

Imagine the possibilities if they can push off their Inkspren, who physically manifest at variable Sizes (and may or may not be able to have jewelry). Or even just pushing off their Shardblade, so they throw it down, Push, them summon it back to them like a weird inverse of Final Fantasy 15.

That would have taken a lot more Time for Sazed to become familiar with the Power, assuming forces actively preventing him from perceiving the wider Cosmere would have allowed it (or his own warring nature that seems to inhibit so much compared to the other Shards. It seems like was 300-ish years later when he first learned there were other Shards, and that only happened when Hoid's Letter arrived. Also: Scadrial, not Roshar.

Yes, it's possible they could be Chosen to be Returned. There are more specific rules on immigrant populations getting ordinary breaths and I dont think Kandra's Generations work in a way that would let them naturalize like normal people. But Divine Breaths are Divine Intervention, so while Unlikely, there is nothing Stopping Endowment from doing it. Only the first Generation of Kandra had a Human form, the rest were born as Mistwraiths. They would probably still need bones as that's more of a mechanical need than anything. They may or may not need the Blessings, and they may or may not require the same Diet and/or portion-size as ordinary Returned, methinks. As far as resonances and/or other magic interactions, the Returned shapeshifting combined with the Kandra would probably synergize great and might not need to digest and place hair, etc. if the Returned Body can push manipulate them like the Royal Locks. There are probably a lot of possibilities with them using Awakening on the bones just like Dakhor bones might do odd things. At an extreme they might be able to Awaken a Lifeless Skeleton and wrap themselves around it like the stone of the Phantoms, but how commands flow between the two might get weird.

That was Rayse's Goal, not necessarily Odium's... Also, there's strong evidence he did and would need at least one other Shard accomplice. Yes to all, and more, Im sure. Also, it could be like-minded organizations and individuals, not necessarily just the other 15. But at minimum I expect him to be sucking up to the other shards a bit to start, to keep them in the dark like he thinks Cultivation is.

Rayse seems to have been perpetually resistant to significant Investment in Roshar, I think because the more he Invested the more he was Bound, so he wanted to Invest as little as necessary to Free himself of Honor's Bonds. Odium now wants to use Roshar as a beachhead and staging ground to spread his influence over the Cosmere, so I suspect he will either make more Fused or perhaps begin more fully pushing for Enlightened Radiants (of both species).

It doesnt have to be actual new mundane metals, the steel alphabet has always had more symbols than just the actual metals, including at least 5 whose meanings are unrevealed (and 4 of which Im guessing correspond to the Dawnshards, but that's probably off-topic).

I knew it looked familiar! The one on the right looks almsot identical to Aon Ire: https://coppermind.net/wiki/Aon#Ire

That's my understanding, which is more or less how they generally parse out partial bits of their own stores (and the trick they were keeping from Vivenna). The original Command for Lifeless took 50 Breaths, then they worked out a single Breath zombie, for example. I suspect the actual wording went from a mindset of Physical Meat Animation to more of a Spiritweb Replacement concept once they began to understand realmics more. Oh absolutely, Vasher does this with normal cloaks regularly (not with a sword so far bit but for grappling and maneuverability).

It seems like the Command sort of sucks out the number of Breaths it needs for the given "spell" so I think you'd need to include the additional In a Lifeless specifically, WOB says it's a good way for them to not be a Lifeless anymore, which I think means they'd get revived to a more full Cognitive Shadow state of things, though we dont know what that would look like.

Hmm, Good example. Soulcasting in particular can overcome more Investiture than most, since it can convert a living person into Fire, for example, so it might be a bit of an exception. Also if they break the obsidian off first and then soulcast it, there might be a Person-to-meat transition happening like when they double-cut with a shardblade.

I dont think we know yet. They arent in the Coppermind listing yet at least. The one on the left is fundamentally different than all the rest with the extra-spiky bits, which makes me think it's entirely foreign and thus is Trellium. Though the same can be said about the one on the right since it's the only example with multiple dots, so who knows. https://coppermind.net/wiki/Steel_alphabet

Nah, it still has a history as an object, including the Soulcast step, and Objects have significantly less Investiture than a sapient Being. Per WOB Forgery does not innately bring enough Investiture to the table to make Allomancy work. It says it could make you an allomancer and look like it had worked, but it wouldn't be Connected to Preservation to actually Power the abilities. Soulcasting can bring a lot more Investiture to the party, but the Radiant and their Spren would both have to have a very deep understanding of the Spiritweb itself to be able to visualize all the changes necessary (since it doesnt offer the benefit of a coding language like selish magics). In Rosharan Terms you are trying to birth a new Spren and then bind it to a physical Body. The first step take actual Divine Intervention for the spren themselves to do it, so it's probably hard and needs a perpendicularity or something. The second is what Ishar is trying to figure out, apparent with practical complications and setbacks. Breaths will be the easiest way to pull this sort of thing off since they specialize in making fake but functional Spiritwebs on Objects. Nightblood is the closest thing to such a custom being like that, but the an over-invested Lifeless can work along the same lines too. We dont really know how far you could push that in terms of Connecting a zombie to another Shard for Powers like Allomancy. But a Scadrian corpse revived into a Lifeless might already have it, and a cleverly Forged body might be able to fake that. The further into the space age where people and populations corssing over becomes more and more likely, the more plausibly these things will become for Forgery purposes. PS. this probably belongs in the general Cosmere discussion or Q&A sections. The Arcanum sub-forum is to take about the WOB collection itself (tagging, updates, etc).

The topology and physical expression in the cognitive Realm will vary from world to world. On Scadrial, Yes, we see the caves down to the Well represented so the Pits are probably similar. In both cases, I couldnt rule out the possibility that the proximity to a natural realmic leak point/perpendicularity might be causing those caves to be represented closer than normal, but regardless I dont really think normal caves would get "filled in", just maybe a bit Misty. On Roshar, the topographical inversion is more extreme, so Caves might get represented as big looping spires above the surface. Since there's a noted large cave system in Aimia, I am hopeful that we'll find out eventually.

That feels similar to how Vasher beat two people he acknowledged as better swordsmen with a well-placed distraction. These topics are fun but are ultimately odds discussions, and the better fighter can always still loose in the moment.