kunnas.com says its essays share one method: name the causal structure that produces the outcome, say what would change if that structure were different, and name who acts or how a conversion would run. "Mechanism" here means a causal structure you can point at — an incentive, a selection pressure, a missing buyer, a mismatch between diagnosis and repair — not a mood, and not "I analyzed something."
A method can be a production rule, a family resemblance, a coding scheme, or a fuzzy criterion. None of those needs an office that admits or excludes a page. The object is which of those this method is, scored as a code you can run.
Hide the labels. Take the five linked essays as an inside sample. Score each, without using the site header, on three marks: does it name a causal structure; a counterfactual change; an actor or a conversion path — someone who acts, or a path by which the outcome would actually change. Then take a comparison sample of careful essays that are not this set, and run the same three marks.
If the marks fire on the inside sample and not the outside, they sort membership in this set. If they fire on strong pages and not weak ones regardless of site, they sort quality. If they fire on both samples, they sort neither, or they sort both at once and cannot tell them apart. If they fire cleanly on none, they describe a cluster.
Domain: scoring public essays for shared method-features, inside one author's set and outside it.
Specimens, same author, different objects: https://kunnas.com/articles/mechanism-realism — architecture over personnel as the persistent repair. https://kunnas.com/articles/how-to-read-this — the author's own claim that every essay applies one lens: what mechanisms produce the outcome? https://kunnas.com/articles/selling-is-futile — a sale cannot close when its first deliverable is the buyer. https://kunnas.com/articles/physics-of-moloch — selection, proxy, and trap as stages, not synonyms. https://kunnas.com/articles/when-ownership-is-the-wrong-repair — a correct diagnosis can still pick the wrong repair.
What would change: a reader could say whether the three marks sort this set, sort quality, sort both, or sort neither.