MyShame

Has Brandon Sanderson ever mentioned if a Returned would need the same amount of breaths to reach higher than the 5th heightening? By default all Returned are 5th heightening (equivalent to 2000 breaths), so to reach the 6th (equivalent to 3500 breaths) would they need an additional 50 (the number of breaths needed to get to the 1st heightening), 1500, 3499, or somewhere in between? It is stated in the text that only Returned have reached the upper heightenings, is this because they need fewer to reach them or because they have more time to get there?

I've been thinking of this theory for a while and have shared in a couple of places, but I think that anyone with the correct connection can use god metals as metalminds, similarly to how anyone with the correct connection can burn a god metal. Nobody in text has tried storing into pure atium or lerasium. There was too little lerasium and atium has only ever been seen as an alloy. Harmonium seems to act very similarly to a metalmind. I think harmonium store kinetic investiture the same way nicrosil stores innate investiture (or whatever term best describes the ability to use investiture). I think because of its unstable nature the stored attribute isn't able to stay and leaks out which causes the effect seen in the books. This leads to the question, why haven't other worlds used their godmetals as metalminds? Feruchemy requires intent and without knowing what feruchemy is or what the metals would store they couldn't use it. It is possible that other worlds have used it. The honorblades in Stormlight Archives act almost the exact same way as unsealed metalminds, which is what got me thinking about this theory. Trellium seems like an outlier as it was common enough that they should have tried using it feruchemically or allomantically it but as far as we are aware did not. I think this might be because Autonomy naturally repels all other forms of investiture and thus can't be used. I'm not convinced of this explanation because Trellium is used in hemalurgy just fine, but I don't know why else it wouldn't have been tried Are there any WOBs that disprove this theory? I couldn't find any.