Does Waddington's self-reported debt to Wiener's cybernetics rest on a primary source, or only on Tier 3–4 biography?

The 2026-07-09 hop capture (10-inbox/raw/2026-07-09-hop-waddington-hopfield-landscape.md) reports that C. H. Waddington credited his systems-thinking to "the cybernetics of Norbert Wiener" and that he organized the Towards a Theoretical Biology symposia (1965–68) bringing cyberneticists and biologists together. That connective tissue currently rests on Tier 3–4 secondary biography (Wikipedia), and the capture itself flagged it as below the sourcing floor for a load-bearing, cross-domain claim — which is why no claim-note was written for it during promotion.

The question: is there a primary source in which Waddington himself names Wiener / cybernetics as an influence? A candidate is the Towards a Theoretical Biology volumes (Waddington, ed., 1968–72) or Waddington's own writings (e.g. The Strategy of the Genes, 1957; Tools for Thought, 1977).

What would answer it: locate Waddington's own words linking his epigenetic / dynamical-systems thinking to Wiener's cybernetics — an introduction, essay, or correspondence — rather than a secondary retelling. Until then the Waddington→cybernetics bridge stays suggestive, not citable, and the vault's Wiener/cybernetics lineage notes should not absorb it as established.