Re: [ot][spam][crazy] Fiction: Index Trees for Random-Access Data on Append-Only Storage

Building ChunkRanges Between Writes [previously Considering Append-Only Trees]: "Okay, this is what we're trying to do!" ChunkRange Concepts: "I am certain we can do this." FlushRegion: "Me too." Building ChunkRanges Between Writes: "I'm still considering append-only trees. But this seems to be a big thorn in the considering, so I'm focusing on it."