Oversleep

First of all, it's wrong in a few places. Nightblood should be the closest thing to Stormlight Archive (Warbreaker should also be closer to it, probably). Mistborn Era 2 happens either between Stormlight 5 and 6 or is happening concurently with the second Arc. Sixth of the Dusk happens before Mistborn Era 4. We do not know when the AU essays were written. I made a chronology of the books last year, it's kinda old because I made it from theoryland WoBs (I did not have access to Arcanum then yet) but should be good enough:

I think @Chaos would know

From newest (more canon) to oldest (less canon): https://wob.coppermind.net/events/115-general-twitter-2017/#e7579 https://wob.coppermind.net/events/90-barnes-noble-b-fest-2016/#e5258 https://wob.coppermind.net/events/6-bands-of-mourning-release-party/#e247 https://wob.coppermind.net/events/217-salt-lake-city-signing/#e7299 https://wob.coppermind.net/events/161-words-of-radiance-washington-dc-signing/#e6927 https://wob.coppermind.net/events/152-dragoncon-2012/#e2801 https://wob.coppermind.net/events/197-general-twitter-2012/#e4207 So, the answer is something along the lines of "no, unless extremely powerful". I'd wager that someone Compounding so much nicrosil that they have attained Mistpoint could do it.

Have you read Sanderson's Laws or have you watched his lectures on worldbuilding magic? Worldbuilding is more of an art and not a science (even if we try to worldbuild a science!). Certainly having read or watched many different takes on magic systems would improve your instincts, both to what you should and shouldn't do. (as it is with pretty much everything, not only magic systems)

Just as Cal said: Cognitive Realm is flat. No, we're not sure how it works. It's kinda fine with Roshar, which only has one landmass, there's not much trouble to project it onto a flat surface. But if you have a world with both hemishperes inhabited... it breaks our brains to figure it out.

To say that Spiritual Realm is "all places and all times" or that time and space do not exist there is a bit misleading. They're not nearly as important as in Physical or Cognitive Realm, but they are in Spiritual too: for example there are Connections to places (which would not make sense if all places were one in Spiritual) and we know that Spiritwebs degrade after death (which again would not make sense if time did not exist in Spiritual). For example, you can look into past and future because time exists in Spiritual Realm. It's just it's not as binding, it's just another dimension in there, like height or depth in Physical. Just like you can look up and down, you can look into past and the future in Spiritual Realm. Does that make sense? Following from that, when Nightblood consumes Investiture, it does not erase it from history or anything. It just vaporizes.

@Dreamstorm I think that WoB references something happening in Oathbringer. I don't recall when it was, though.

Words of Radiance. There have been mentions of a spren following Eshonai.

Actually... I keep wondering: how should that sentence look like, spoken by a native Rosharan?

Oh, not at all. The terminology comes straight from Brandon, "unkeyed" from BoM, "unsealed" from this WoB: You cannot make this assumption about context then

Setting up a virtual jar so that people can tip transcribers with real money?

Which ear did you think Vin's earring was in? There's no canon answer, just answer honestly what did you imagine based on what you read.

No. If we go by properties of lerasium alloys (#1 #2 #3), lerasium-atium alloy makes one atium Misting. Not to mention that lerasium can only grant Allomancy: That's what my opinion is. By the way, we know Hoid has unkeyed metalminds: But we still don't know if he can use Feruchemy: As far as we know, we should disregard that 2013 WoB (which was paraphrased to begin with) in favor of the newer ones.

Yeah, it's plausible that Feruchemical gold could work like that.

Races of Horneaters (like Rock) and Herdazians (like Lopen) are results of humans and parshendi mixing. Natans and Babatharnams are results of humans and Aimians (like Axies the Collector from Interludes) mixing. Therefore it's possible that Thaylens also have a bit of nonhuman blood, which would explain their unusual features. Or maybe it's just Cultivation messing with genetics.

You're assuming this evolved naturally. However, we have four races that are resluts of intermixing with either Listeners or Aimians: Herdazians, Horneaters, Natans and Babatharnams; additionaly there's a Shard of Cultivation on Roshar and she seems to be one that would poke around with genetics (like, what the damnation is happening with Adolin's hair?).

As far as we know, it can store Innate Investiture - in short, stuff stealable by Hemalurgy.

Here's a compilation of WoBs I like to drop when discussing Hoidsense. As you can see, over the years Brandon backed away from Hoid using Feruchemy to know where to be.

I'm not sure why are you explaining all this to me. Perhaps you should go reread that WoB and see who it was that asked Brandon about all this... I wouldn't be hanging up on that "avatar = physical incarnaction" definition too much. I'll try to explain it in my theory.

I know real world definitions. I was asking about what Shardic avatar is, exactly.

I think I have a theory of Realmatics cooking that would try to explain all that

@Brandon Sanderson we need a RAFO

Yes: Here's an answer to what actually spooked her off, but it contains a spoiler for Secret History, so be wary of that: https://wob.coppermind.net/events/181-stormlight-three-update-4/#e3803

It was posted only 9 pages ago. Sheesh.

Five thousand? Man, that's something.