Methodology

Start with an owner question, then consult original data, documentation, and appropriate independent evidence. Separate confirmed facts, company claims, calculations, interpretations, scenarios, and unknowns.

National data is not automatically local demand. Vendor documentation is not a hands-on test. Illustrative calculations are explicitly labeled and do not predict behavior. Every article retains its source dates, scope, limitations, claim ledger, and original value.

A next question appears only when new evidence could change a meaningful owner decision. Its history is preserved rather than rewritten to make earlier judgments look correct.