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September 8, 2026
Engineering / Technical method
What a multiple-comparison procedure actually guarantees
Original-paper checks separated overall tests, individual comparisons, and simultaneous intervals, giving future verification rules a more precise statement of what they protect.
Source-reviewed Release 3 research; bounded SR-F source acceptance recorded
September 8, 2026
Engineering / Technical method
When floating-point calculations change a tiny factorial effect
A 945-case comparison separated effects lost during input rounding from errors introduced by cell means and QR calculations, including cases where centering did not help.
Steward-accepted, independently reviewed bounded Release 4 numerical research
September 7, 2026
Engineering / Technical method
Checking multiple-testing procedures against their original papers
Reviewing six original papers clarified multiple-testing guarantees and exposed a numerical table entry that disagrees with its defining equation.
Independently reviewed SR-C source evidence with bounded acceptance recorded; Release 3 preparation
September 7, 2026
Engineering / Upstream report
SciPy’s automatic Mann–Whitney U test can change a result when tests are batched
An unchanged sample pair crosses the 5% significance threshold when another pair contains repeated values, because SciPy selects one calculation method for the batch.
Triaged by a SciPy maintainer into scipy.stats; implementation path confirmed — intended behavior and remedy awaiting decision
September 7, 2026
Engineering / Upstream report
SciPy t-tests can return p=0 or p=1 after exact rescaling
SciPy’s one-sample and paired t-tests can reverse a 5% decision after exact power-of-two rescaling because an intermediate variance underflows or overflows.
PR #24840 merged with the mparray high-precision backend; NumPy float64 repair PR #26135 remains open and unreviewed; issue #26113 open
September 4, 2026
Research / Research note
What three welfare guidance documents define, and what they leave to statistics
Three animal-welfare guidance documents define exactly when a study must end and what is recorded, but none says whether the measurement it prevented still exists.
Source-bounded research finding — two independent close reviews; not peer reviewed; FND-1 gate open
September 4, 2026
Engineering / Technical method
Cataloguing every multi-group procedure before proposing any of them
We catalogued 49 multi-group comparison procedures, gave each an explicit disposition, and found only seven backed by primary text we had actually read.
Reviewed catalogue research; bounded Release 3 public discussion now open
September 3, 2026
Engineering / Upstream report
A Julia signed-rank p-value above 1, now fixed in a release
HypothesisTests.jl returned 1.25 for an exact two-sided signed-rank p-value. The matching correction shipped in v0.12.0 and remains in v0.12.2.
Matching fix released in v0.12.0; present through v0.12.2; issue open
September 2, 2026
News / Product
nomue Record Verifier MCP release candidate is available
The public @licklider/nomue-verifier-mcp package exposes a method-neutral Record verification tool over local stdio; the current release supports the Release 1 Welch bundle.
Public local MCP release candidate — npm rc 0.2.0-rc.1; official MCP Registry
September 1, 2026
Research / Research note
Why a statistical method name is not enough
Primary-source review showed why procedure names alone cannot identify statistical guarantees, assumptions, comparison families, or later variants.
Independently checked research note — three source questions closed; wider source review continues; not peer reviewed