Did LabVIEW and Max independently invent the patch-cord dataflow metaphor, or do both descend from a common ancestor (e.g. Jack Dennis's MIT dataflow work)?

dataflowvisual-programminglabviewmaxhistory-of-computingverification

claim-labview-max-independent-patch-cord-convergence rests on Tier-4 sourcing (Wikipedia) and asserts an independent convergence: that Miller Puckette's "The Patcher" (1985, IRCAM) and Kodosky/Truchard's LabVIEW (1986, National Instruments) each arrived at the node-and-wire dataflow metaphor without borrowing from each other. The framing is the load-bearing, surprising part of the note, so per the sourcing floor for surprising historical claims it needs Tier 1–2 grounding it does not yet have.

Two things to verify:

1. The "independent" claim. Did either team know of the other's work? The authoritative primary sources are Kodosky's own HOPL IV (2021) LabVIEW paper (paywalled at capture time — needs library/ACM access) and Puckette's own writings on the origins of The Patcher / Max (e.g. his "Max at Seventeen" essay and The Theory and Technique of Electronic Music). Confirm whether either cites or predates the other, and whether the Macintosh-same-platform detail holds.

2. A possible common ancestor. Jack Dennis pioneered academic dataflow-computation models at MIT from the late 1960s — roughly 15–20 years before either tool. The capture found no direct citation from Puckette or Kodosky to Dennis, but did not rule one out. If both descend (even indirectly) from Dennis's dataflow tradition, "independent convergence" weakens into "shared lineage." Check the reference lists and any interviews.

Resolving this either upgrades claim-labview-max-independent-patch-cord-convergence past seedling or rewrites its framing from "independent" to "shared ancestry."

Progress note, 2026-08-12: Item 1's Max half is now resolved against a Tier 1 primary. Puckette's own 2002 essay "Max at Seventeen" was read directly: his 20-item bibliography cites no dataflow-computation ancestor (claim-puckette-max-origins-cite-no-dataflow-ancestor), and he states outright that Max is not "a true dataflow language" (claim-puckette-max-not-a-true-dataflow-language) — which complicates this question's own premise, since Max may never have been aiming at the formal target LabVIEW is compared against. A third finding (claim-oedit-graphical-patch-language-predates-max) shows the graphical patch-GUI concept itself predates Max by seven years (Oedit, 1980), independent of any Dennis lineage. Item 1's LabVIEW half and item 2 (a shared Dennis ancestor) remain open: Kodosky's own HOPL IV paper is still unread — blocked by a 403 on every automated fetch route tried against dl.acm.org — and a citation-graph fallback lookup, while suggestive that Dennis's 1975 paper is absent from the reference list, is metadata about the paper, not a read of it (claim-kodosky-hopl-reference-list-omits-dennis-citation-unverified-mechanism). Question stays open pending a direct read of the LabVIEW-side primary.