This Zenodo repository contains a speculative technical note re-examining the historical Allais effect. The Allais effect refers to anomalous pendulum behavior reported during some solar eclipses. It is not an accepted physical phenomenon: the reports are incomplete, sometimes contradictory, and lack modern statistical controls. This note does not claim that the effect is real. It proposes that the most reasonable first-order explanation is a combination of local seismic or microseismic disturbances and tidal deformation of the ground. During a solar eclipse, the Sun and Moon are aligned, producing spring tides and slightly enhanced Earth tides. These small crustal deformations may, in some cases, facilitate microseismic events that a sensitive pendulum can detect. This mechanism could explain why the anomaly appears intermittently and not in every eclipse, without invoking new physics. The document presents two competing hypotheses: H1 — Conservative null: the historical reports are explained by local seismic or microseismic disturbances, possibly assisted by thermal or instrumental artefacts. H2 — Non-conventional alternative: a genuine but unknown physical effect exists. This should only be considered if H1 is rejected under controlled conditions. The note also outlines a phased observational roadmap: build a critical historical register, reanalyze seismic data, design future multi-instrument observations, and perform pre-registered statistical tests. The hypothesis is falsifiable. If future anomalies occur without any seismic, thermal, or instrumental cause, only then would a non-conventional interpretation become necessary. No physical mechanism for anomalous gravity is proposed, and no alternative gravitational framework, including UAT/UCP, is validated or tested by this note.