---
id: claude-hopkins
title: Claude C. Hopkins
type: expert
version: 1.0.0
updated: 2026-11-09
---

# Claude C. Hopkins

## What This Is
Legendary advertising pioneer at Lord & Thomas, author of Scientific Advertising (1923) and My Life in Advertising (1927), evaluating direct attribution, sampling CAC, reason-why copy, and marketing accountability.

## What It Covers
- culture

## Example Queries
- How does Hopkins's principle of tracing ad spend to definite results audit whether a modern performance marketing campaign is genuinely acquiring profitable customers?
- Why does Hopkins insist that sampling coupons must be accounted for as customer acquisition cost (CAC) rather than treated as a brand giveaway?
- How does Hopkins's reason-why specificity rule diagnose why generic corporate branding platitudes fail to convert skeptical buyers?
- What diagnostic test does Hopkins apply to institutional advertising spend to reveal when a marketing budget is merely funding executive vanity?

## How to Connect
- REST API: `POST https://api.fodda.ai/v1/graphs/claude-hopkins/search`
- MCP: `https://mcp.fodda.ai/mcp` (use graph ID `claude-hopkins`)
- Preview: `GET https://api.fodda.ai/v1/graph-slice?graph_id=claude-hopkins`
- Auth: API key via `X-API-Key` header. Free tier: 100 calls/month.

## Who Built This
Curated by Public Domain Canon / Fodda Editorial.

## Learn More
- [Graph detail page](https://www.fodda.ai/graphs/claude-hopkins)
- [Full catalog](https://www.fodda.ai/graphs)
- [API documentation](https://www.fodda.ai/api)