The Cataclysm was mass synchronization

We know that only children survived the cataclysm, and I think a post somewhere mentioned that in Res Caten, only children above a certain age could cede Will. I think the children’s survival of the cataclysm was linked to their inability to cede Will.

So why did everyone else die? First, im inferring that synchronization is when someone travels to Luceum and Obiteum, thereby linking with their clones or « synchronizing » with them. When Vis was exploring one of the ruins, the phrase « synchronous is death » repeats over and over. I think this means that normally, when someone travels to the other worlds, their Res self dies. This fits with Caeror’s circumstance, as he is alive in one of the alternate relativise but dead is Res. So, Vis’s inability to cede Will could explain why his Res self is still alive.

So, maybe the cataclysm was one big synchronization prompted by some unknown force. Perhaps all the people died in Res but were cloned into Luceum and Obiteum in the process.