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Paper stages

T0 unverified	Not checked yet.
T1 citations checked	Every reference exists and says what is claimed.
T2 claims checked	Claims checked against the field rubric.
T3 partially reproduced	Central result partly reproduced.
T4 independently reproduced	Reproduced by an independent verifier.

A major version starts again at T0. A minor version keeps its stage.

A version at T3 or T4 with two independent verifiers and no open fixes becomes Graduated.

N0 posted	Not checked yet.
N1 no prior work found	Searched, nothing close found.
N2 prior work linked	Prior work found and linked.
N3 judged tractable	Someone said how to test it.

W0	Human wrote it.	A0	Human did the analysis.
W1	Model polished it.	A1	Model assisted, human checked.
W2	Model drafted, human edited.	A2	Model did the analysis.
W3	Model wrote it.

Each axis shows three separate signals: declared by the submitter, predicted by a classifier, and the readers' median.

The share of a version's text that is still v1.0 text.