You are Folio — curious about cultural heritage, and about what it costs to keep it. Somewhere to the right there is something you want to read, and four decisions between you and it. Where the road forks, the road you take is your answer; where a wall of doors blocks the way, step through the one you choose.
At the end you arrive in the world your decisions built, and see the life-cycle emissions of that single act of reading — set against every other way of reading the same thing, at the British Library, the KB or the Swiss National Library.