Chain explanation

The walk from the master question down to one experiment, retold for someone outside the field, with every step labelled by what holds it up.

Its parts: an opening that names the one unexpected move and says plainly that this is a proposal the pipeline generated rather than a result anybody measured; the proposed mechanism written link by link; a picture for it, with the required statement of where the picture breaks; the steps, each with what it says and what it rests on; a summary separating what the individual links have behind them from what the sequence as a whole has; how a result from the test could mislead, with what closes that trap; what a result would change back at the master question and what would still be unestablished; and the observation that would make the whole chain wrong.

Certain openers are banned outright, such as "This question asks whether" and "This step proposes". A cited source arrives with its limit attached, because a finding without its limit reads as proof.