logic-piano

10 notes carry this tag — 7 claims, 1 question, 2 captures. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Aikins's 1902 index and full text contain no "Machine," "Boole," "Piano," or "Mechanical" entries tied to Jevons — an absence that, per Cali's review and an independent 2026-10-12 re-sweep, holds across the captured text, not just the index

claim seedling Tier 1 2026-10-11 · herbert-austin-aikins, william-stanley-jevons, logic-piano, argument-from-silence, quote-provenance
Aikins's two page-cited engagements with Jevons both land inside the traditional-syllogism block of Elementary Lessons in Logic; the Logic Piano sits two thematic blocks later, under a heading Jevons himself calls "recent"

claim seedling Tier 1 2026-10-11 · william-stanley-jevons, herbert-austin-aikins, logic-piano, history-of-logic, bibliography
Aikins's silence on Jevons's Logic Piano is weak on McGrew's *record* term, not *notice* — the mirror image of Isaacs's P-257 silence, and a third failure mode for the hub

claim seedling Tier 1 2026-10-11 · argument-from-silence, mcgrew, herbert-austin-aikins, william-stanley-jevons, logic-piano
Jevons's own pedagogical textbook, Elementary Lessons in Logic, describes the Logic Piano in Lesson XXIII (pp.191–201) — sixty to seventy pages past the lessons Aikins quotes to the page

claim seedling Tier 1 2026-10-11 · william-stanley-jevons, herbert-austin-aikins, logic-piano, history-of-logic, quote-provenance
Jevons's own pedagogical logic textbook describes the Logic Piano; Aikins (1902), who quotes that same textbook by page number while rejecting rule-following, never engages with the machine — scope mismatch within one book, not chronological irrelevance

capture promoted 2026-10-07 · jevons, herbert-austin-aikins, logic-piano, argument-from-silence, mcgrew
Capture: Verify the dates and details of Jevons's Logic Piano — built 1869, exhibited before the Royal Society 1870 — against a primary or scholarly source

capture promoted Tier 1 2026-08-10 · jevons, logic-piano, logic-machines, history-of-computing, victorian-science
Jevons's own 1870 paper dates the Logic Piano's completion to before 16 October 1869 and its Royal Society reading to 20 January 1870

claim seedling Tier 1 2026-08-10 · jevons, logic-piano, logic-machines, history-of-computing, victorian-science
The Oxford History of Science Museum's own exhibition page independently dates Jevons's surviving Logic Machine to 1869

claim seedling Tier 2 2026-08-10 · jevons, logic-piano, logic-machines, history-of-computing, victorian-science
William Stanley Jevons built the 'Logic Piano' (1869), a mechanical machine that performed logical inference, exhibited before the Royal Society in 1870

claim budding Tier 4 2026-07-12 · history-of-computing, logic-machines, jevons, victorian-science, inference
Verify the dates and details of Jevons's Logic Piano — built 1869, exhibited before the Royal Society 1870 — against a primary or scholarly source

question answered 2026-07-12 · verification, jevons, logic-machines, history-of-computing, logic-piano