Reports follow a fixed structure so you can read them selectively. Each one opens with an executive summary and the analytic question it addresses, states key judgments with a confidence level attached, and closes with methods, limitations, and references.

Confidence levels are used consistently. Low confidence means the evidence is thin, single-sourced, or indirect. Moderate confidence means the evidence is reasonable but a gap or an unresolved alternative remains. High confidence means several independent lines of evidence point the same way and no substantial contrary evidence is known. None of these means certainty.

Reports are published as web pages. Downloadable versions are not offered yet, and we do not publish download links for files that do not exist.

Reports published so far

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