Disco Mental Institute

[Craig Ferguson]

The Flood as we know it was actually the fault of Ancient Humanity.
...
Humans used a supercell found in cylinder things on animals (cue the flood). The origins of these cylinders is unknown.

Oh god dammit, more crazy unprecedented backstory.

In what expanded-universe-comic-book-or-something-that-I-can't-be-bothered-to-keep-up-with-anymore was this tidibt revealed?

My understanding was that it was some extra-galactic parasite that suddenly appeared to the Forerunners and killed 'em off, but the Forerunners locked some up on various installations before they blew everything up, and then the Covenant came along, derped it up on Installation 04, released the Flood there, and then did so again and again on various other Forerunner installations as necessary to the game-plot.

At what point did "Ancient Humans" have access to Flood-cells, anyway?

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