Theory of the Shadow [SPOILERS.]

[hollowleviathan]

Can everyone please calm down and try to keep a civil tone.

and yeah, it's fact, at least, it's the only uncomplicated explanation that fits all endings and events accurately and without making any drastic assumptions and using only what has been learned... that's as close as you can get without the devs stepping in, which would be nice.

That just means it is, in your opinion, the best theory. Calling it a fact is just provocative.