{"id":1166,"slug":"rule-better-copy-is-wrong-strategy-credence-good-requires-liability","title":"R5 — Recognize \"better marketing copy\" is the wrong strategy for a credence-good market; solution is liability + verifiability + in-group reputation, not copy","kind":"rule","scope":"business","status":"current","audiences":["kevin","candid-team"],"topics":["psychology-aversion","credence-goods","signalling-theory"],"reference_body":"**Rule:** \"Marketing aversion is structural, therefore better marketing assets are the answer\" is the **wrong read** of Brief #1 ([[research-brief-psychology-gc-marketing-aversion-may-2026]]). The structural cause of GC marketing aversion is the **credence-good problem** ([[dulleck-kerschbamer-sutter-2011-liability-verifiability-credence-goods]]: \"allowing sellers to build up reputation has little influence\"). **Better copy does not solve a credence-good problem. Liability, verifiability, and in-group reputation do.**\n\n**Why:** In Dulleck-Kerschbamer-Sutter's lab finding, liability does the work of producing market efficiency; reputation alone does not. Trying to outwrite the problem is a category error — no copy quality can substitute for liability commitment + verifiable threshold + in-group standing.\n\n**How to apply:**\n- Candid content output should optimize for **being shared by the in-group**, not for being persuasive to a cold reader.\n- Test for content quality: would a peer-coach implementer share this with their cohort? Would a BILD committee member cite this in conversation? If not, the content is in the wrong frame regardless of its copy quality.\n- Stop investing in \"more persuasive landing pages\" as a primary lever. Start investing in **liability-bearing engagement structures** (clear scope, milestone billing tied to inspectable deliverables, references prospects can call) and **in-group asset production** (peer-cited case studies, named-byline writing in trade press, speaking slots in HBA venues).\n\n**Cross-link:** Existing [[rule-concede-credence-good-problem-make-marketing-inspectable]] from Brief #1 is the foundation; this rule sharpens it by specifying *what* solves the credence-good problem (liability, not copy).","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"research-brief-trust-networks-in-group-reputation-may-2026","title":"Research brief: trust, referral networks, and in-group reputation in Ontario's trades economy (May 2026 — Foundation Brief #3)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"dulleck-kerschbamer-sutter-2011-liability-verifiability-credence-goods","title":"Dulleck, Kerschbamer, Sutter 2011 (AER) — credence-goods lab experiment; \"liability has crucial effect, verifiability minor, reputation little influence\"","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"marketing-services-as-credence-good-for-gc","title":"Marketing services are a near-paradigmatic credence good for a GC buyer","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"rule-concede-credence-good-problem-make-marketing-inspectable","title":"Rule: concede the credence-good problem; make marketing as inspectable as possible","kind":"rule","scope":"business","link_type":"relates-to"}],"incoming":[]},"created_at":"2026-05-25T13:34:11.267Z","updated_at":"2026-05-25T13:34:11.267Z"}