Ichor on Nalthis and Roshar

[darkgem7]

I was doing a reread of TWOK, and at the end of chapter 26:Stillness, there is noted that purple ichor spurts out of a chasmfiend as Adolin reaches inside to grab a gemheart. I also recently listened to the Five Scholars shardcast in which they reference the importance of Yesteel being the one to discover ichor alcohol. Could this possible mean that Yesteel has been to Roshar and developed it from the purple ichor from the animals of Roshar? I say animals because in the prologue of TWOK Kalak notices purple blood on the ground, as well it is stated in the books that axehounds have purple blood. Is this just coincidence I am noticing or is there something noteworthy here? I am not good with the timelines on when each book in the Cosmere unfolds. Could Yesteel be responsible for some life on Roshar, like the chasmfiends? My speculations, probably common speculation would assume that Roshar's Shattered Plains and surrounding areas could have been underwater at some point, given the description of life and environments. Chasmfiend being very crustacean esque, and the plant life being very ocean like. Is this life on Roshar strictly due to evolution or experiments of Yesteel in his pursuit to discover ichor alcohol? Or is all of this just a huge rabbit hole tangent my brain went down? Either way any thoughts or speculations? 

[RShara she/her]

It might be remnants of a memory of having dragons around. Dragons exist on Yolen, the first human-populated world in the cosmere, and I remember that in fantasy, their blood is often called ichor.

Yesteel and the Five Scholars would have been ~900 years before the events of SA, so I doubt he had anything to do with life on Roshar.

Edited August 6, 2019 by RShara

[Karger he/him]

Ichor is the blood of the gods and monsters in ancient mythologies and it was responsible for some of their superhuman nature.  Ichor alcohol likely got its name from its ability to keep lifeless going past what was previously thought possible.  Ichor on Roshar probably comes from the fact that everything native to Roshar looked like monsters to the original Ashynites.