Objective reality as the spine and subjective realities as the bushes of a Kesten tree of consistent stories

Explaining how subjective experience comes out of today's physics is hard. And we can't deny experience—it's the one thing we're sure of. So flip the problem: start from experience and explain how "objective reality" shows up. This work addresses long-standing questions in idealism: Why does there appear to be a single immortal objective reality shared among many subjective realities? And why is there no apparent direct interaction between subjective realities? An idealist reformulation of the Anthropic Principle leads to a Kesten tree of consistent stories. The Kesten tree's spine is identified as objective reality, with the bushes representing otherwise independent subjective realities. This solution's simplicity may have kept it hidden under conceptual clutter.