Basis
Working conclusion: a contribution is useful when readers can inspect its basis and understand a next step. This is a PTJ project hypothesis, not a measured effect.
Method
Method: define the question, gather primary evidence, separate fact from interpretation and proposal, consider an alternative explanation, review the material and preserve significant changes.
Sources
The model comes from the public PTJ mission and process descriptions on this site. They are primary project texts, not independent evidence of effectiveness. No external study is claimed for this conceptual dossier.
What remains unknown
Unknowns include a sustainable publishing rhythm, the number of launch-ready lines and which proposals will receive practical continuation. These require observation of real work.
Possible continuation
Next: check the process with approved materials and record corrections and observable results. A test release does not establish that the whole network is operating.