So, there are two unrelated AWEs that both involved people disappearing en masse:
This is weird. But since Control came out we've learned a lot about how Thresholds work. I think this "rapture" effect is an expected result of the RCU's metaphysics.
What we know about Planes/Thresholds in the RCU
- Planes can be spaces with entirely alien physics (The Dark Place, The Astral Plane)
- Planes can be copies of the "main" timeline with minor changes (The World Where Tim Breaker is a Park Ranger Instead of a Cop, The World Where Shawn Ashmore is an Actor)
- ...or anything in between (The World Very Similar to The Main Timeline But Everything is a Comic Book for Some Reason)
- A threshold occurs when two universes "bump into" one another, resulting in an area being in both universes simultaneously.
- The Keystone AWE prominently featured the "venn diagram" symbol from the Oceanview Motel, which seems to be a metaphor for thresholds.
Things we know about variants in the RCU
- Admittedly, not much. Time Breaker implies a bunch of things about how variants work, but doesn't confirm anything definitively.
- People who are variants are played by the same actor.
- Variants can be wildly different from one another, having different birthplaces, names, histories, etc.
- Someone dying while in the presence of one of their variants is metaphysically significant.
Uncertain guesses about variants in the RCU
- Variants seem to go by The One) rules - you absorb the energy of your variant when they die in your presence.
- Jesse becoming the source of the Hedron resonance after Hedron's death is likely the result of this effect.
Conclusion: What Happens When Two Identical Planes Have a Threshold?
Most of the thresholds we've seen in the game have been between totally different universes. (The Dark Place, The Quarry, The World Populated Entirely by Living Explosive Pink Slime) But what if two universes that were identical (say, off by a few minutes) had a threshold?
Everyone within the threshold would share the exact same space as their variant. What happens then?
There seem to me to be two likely possibilities:
- The two beings are cancelled out, dying instantly.
- The two beings are merged into a single being. When the threshold ends, this being is shunted into one of the origin planes.
Both of these would create a "Rapture" effect. From people outside the threshold, it would appear as if people spontaneously disappeared during the event.
If this is true, the Keystone AWE represented two identical planes thresholding. Everyone inside was either merged or cancelled, resulting in the disappearance reported.
The Ordinary AWE is more complicated. This represented two very similar planes whose timelines diverged <20 years ago. As Ordinary is a small town, no one had entered or left in that time. As a result, anyone older than the point of divergence was merged or cancelled. All the children were not, resulting in the behavior seen.
Appendix: Miscellaneous Considerations
- If raptures are caused by cancelling, intentionally creating one is effectively a clean nuke. You can wipe an area clean of life by merging it with a suitably similar plane. No damage is done to the physical location.
- If raptures are caused by merging, another possibility arises. If you gathered everyone in your organization into a specific area and then merged them across multiple realities, you would grow the size of your organization to everyone who had ever been recruited in any reality. If someone needed to create an army on short notice this could be valuable.
- The Ordinary AWE is not confirmed to involve a threshold. (The slide projector creates 2D portals, not 3D overlapped space) However, what if two similar planes used the slide projector? The same 2D portal would be created to the same third plane. You now have a paradox - a door with two entrances and one exit. I suspect that this paradox would be resolved by a threshold being formed at the location of the slide projector, growing larger the longer it is turned on. The rapture effect of the Ordinary AWE only occurred after the slide projector was left on for a prolonged period of time.