Method, version 1.0

A recommendation is a chain of decisions, not a score pulled from a spreadsheet.

Our method follows the question from buyer intent through model matching, evidence review, contrary findings, and a separate editorial check.

Recent Worthwise comparisonAir purifiers for wildfire smoke: CADR, room size, noise, and filters comparedUse documented smoke CADR to match room size. This evidence set independently evaluates only the Levoit Vital 200S-P; the other shortlisted models are specification comparisons, so it does not establish a universal performance winner.Read comparison
Verified facts, consumer patterns, tradeoffs, and buyer context converge on a considered decision.
The decision path used to connect verified evidence with buyer fit.

Ten stages from question to guide

  1. Define the buyer decision

    We identify the use case, constraints, search intent, and facts that could change the answer.

  2. Build the candidate field

    We investigate a broad set before choosing a meaningful shortlist. A smaller field needs a category-specific reason.

  3. Match models and variants

    We separate generations, sizes, bundles, and identifiers instead of mixing unlike evidence.

  4. Verify material facts

    Specifications and safety statements are tied to appropriate sources and given a visible claim status.

  5. Synthesize owner experience

    We look for recurring themes across permitted sources and keep model match, detail, recency, and source diversity in view.

  6. Assess review integrity

    We note listing merges, bursts, promotional bias, variant contamination, and contradictions without turning signals into accusations.

  7. Segment buyer fit

    We explain who benefits, who should skip the product, and which constraint changes the recommendation.

  8. Use category-specific criteria

    Air cleaning, floor care, coffee, sleep, work, and travel products should not be judged by the same generic scorecard.

  9. Challenge the leading answer

    We search for recalls, ownership costs, common failures, misleading claims, and stronger alternatives.

  10. Run an editorial check

    A separate pass checks support, model accuracy, source mix, wording, usefulness, copyright, links, and technical readiness.

How claim status works

Verified
Appropriate evidence supports the claim for the product in scope.
Substantially supported
The central claim is supported, with a qualification that matters.
Partly supported
Only part of the claim is supported or the match is incomplete.
Unverified
We did not find enough suitable evidence to rely on the claim.
Contradicted
Credible evidence conflicts with the claim.
Not applicable
The claim does not apply to the model or decision being evaluated.

How to read a Research Passport

The Passport summarizes source count and types, products considered, evidence confidence, review-integrity risk, physical-testing status, affiliate status, limitations, and audit history. It is a compact record of what the article can and cannot support.

A Passport improves traceability, but it does not replace reading the reasoning, sources, and limitations in the guide itself.