The tree · Biology · World event · Root: on the scale of the whole window
Humans can live off Earth long term, by partial gravity or by a spinning habitat
The hedge on biology, as one node so it has a name and a number. Resolves if either route does: people stay healthy for a year in partial gravity, or a rotating habitat with Earth-normal gravity is occupied for a year. The system tiers that need long-term living require this node rather than either route alone.
What counts as it having happened
Either of the two route nodes it depends on has resolved yes.
Settled by: The resolving route node's own source
Probability, by longevity scenario
| baseline2071 ± 8 | moderate2080 | strong2095 | radical2136 | openno deadline |
|---|---|---|---|---|
| 100% | 100% | 100% | 100% | 100% |
Each number is the chance this resolves yes before that scenario's window closes, given that everything it depends on resolves first. Estimated 2026-09-08.
Why these numbers: Resolves whenever either route does; certainty here means the number is carried entirely by the two route nodes.
Think this node is wrong, missing a dependency, or estimated badly?
Open an issue about it, or read
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The record itself is data/B-biology.toml in the public repository.