think about that rule

I bet it has something to do with Adam and Eve being fictional characters in the mythological texts of a bunch of hokey religions.

Surprisingly, no.
- Then it's more of an imagining than a theory isn't it?
  
  You can have theories about fictional things
  
  Yes, that's called using your imagination.
  
  Imagine doing that

Go on...

- I was the alien. I can confirm
Humanoids already existed (think slightly more advanced Neanderthal types). Adam and Eve were both of these, but they were changed (flash of inspiration, touch of God, random mutation, take your pick) effectively elevated them above that level. (God evolved his Pokemon. LOL) So, while they were "created" as many and woman, they had a standard mammalian birth, and thus each have a bellybutton.
Just a hypothesis, nothing more. Do with it as you will.
- As an evolutionary biologist I promise you that this makes way more sense in your head than it makes in actual reality. This is not how evolution works.
  
  Well it’s a theory on divinity not evolution
  
  My point is that it makes no sense in the framework of reality and that you might as well go with the literal story of Adam and Eve or whatever mythology you want, because throwing Neanderthals into the mix does fuck all in terms of making anything believable. It’s literally as scientifically justified as the Norse creation myth about a giant cow licking salty ice to uncover the gods.
  
  The question was how it could possibly co-exist, an answer was proffered, and you felt offended by the thought and a need to squash it from existence? Meanwhile, how certain are you of any reality? https://en.wikipedia.org/wiki/Brain_in_a_vat
  
  If someone asks how the sun works and the answer proffered is midgets in fire removedant outfits running a big engine, it's perfectly reasonable to dismiss it with predjudice.
  
  I'm ready to join this religion
  
  It's a wild hypothesis on divinity, not the law of evolution.
  
  If they are to both exist in reality they must be congruent.
  
  Not claiming this is evolution. Far from it, that would happen on a much longer timescale and not affect only 2 individuals. You're focusing on the wrong aspect of my theory.
  
  Okay, on what aspect of your theory should I focus? There is no support for a sudden transition to “intelligence.” It’s literally all continuous to the point that people are studying the learned and taught moral rules among chimpanzee and baboon populations.
  
  The aspect where I posit how they have bellybuttons.
  I never claimed they gained intelligence, only they they became differentiated from the wider population. What amount of differentiation is not specified.
  
  They literally didn’t become differentiated in the way you’re postulating. It’s a continuum. That’s my point.
  I’ve taught this course.
  
  A course on God's evolutionary bellybutton install on Adam and Eve? Tell me more
  
  I will give you the cliff notes version. There’s a thing called an umbilical cord. It’s used to provide nutrients and has been used as a mode of nutrient supply in placental mammals throughout evolutionary time.
  The problem is that people who start with the conclusion (“god made people special”) get all fouled up when they have to walk through increasingly convoluted thinking to make their presuppositions line up with reality. Belly buttons are only a problem is you start from the idea of some weird mythology. Otherwise, they’re just expected and fully explained. It’s really not a matter for a course, but if you’re interested in a freshman level text on biology I could probably recommend one.
  
  I'll be honest man I was being retorical with that question, but this was a good reply anyway so I'll upvote
- The closest thing scientifically that we'll ever come to Adam and Eve is probably Y-chromosomal Adam and Mitochondrial Eve
  
  That is possible because once population reduced to around thousands people, right? I think the "legend" of Adam and Eve might symbolize the ancient times. Ofc, might not be but-
- And then the rest of the humanoids just died off? That just raises more questions lol

God gave birth to them?

The labour was 7 days long. After that He invented the epidural.