Source hierarchy
Use the source that can answer the claim.
Technical guides favor standards bodies, regulators, government laboratories, peer-reviewed research, universities, and primary technical documentation. Manufacturer pages are appropriate for documenting that company’s stated product, project, or status; they are not independent proof of every performance claim.
Heritage work favors official site records, archaeological research, conservation guidance, and community context. Exploratory creators such as BassForge may identify questions worth testing, but they do not replace archaeological evidence.