Board Thread:General Discussion/@comment-26907577-20191002153041/@comment-26907577-20191002231924

It's time to spit hypotheses. ...that's just BS. SOULs predated the Barrier and caused the war. Next! Dog of the Gaps. Improbable, but we haven't found a contradiction- just a statistical anomaly. I don't think we want to assume the Barrier is like that one sentient mind-bending supercomputer from Life, the Universe, and Everything. Then they would go as a team and not leave their friends' items behind. That's just stupid. As in, a terrible idea. Either they were disorganized or they went together, and they apparently didn't go together.
 * A SOUL is a trait related to the Underground, so every human that fell in got a sequential color out of 7, cycling through.
 * Toby Fox didn't think about this.
 * Undertale is conveniently set in a universe where 8 humans fell and only the first and last shared SOUL traits.
 * Mt. Ebott somehow attracts humans, looking for Chara, suicidal, or otherwise, with new SOUL colors.
 * Uh, maybe the humans were chosen for the rescue quest for their different traits?
 * They went one at a time?

These are the things which could ensure the humans had different SOUL colors: ...and I summarized each of these above.
 * Other humans.
 * Fate.
 * Chance.
 * The Barrier.

Hmm.