The three-layer grounding stack that kills hallucination at the source.

In Lesson 4.7 of GROW Course 4 (Hardening & Shipping), Doug Liles works through it with you. A layered grounding approach that attacks hallucination structurally.

What you'll take away

- Why grounding

- Layer one: retrieval

- Layer two: constraints

Chapters

(0:00) Cold open & the promise

(7:54) Why grounding

(15:48) Layer one: retrieval

(23:42) Layer two: constraints

(31:36) Layer three: verification

(39:30) Measuring grounding

(47:24) The artifact & what to do Monday

Study guide, slide deck, blog companion, infographic (free)

- https://fde.goodcombinator.ai/lessons/FDE_Lesson_4_7

Audio companion is AI-narrated using NotebookLM. Explainer video is human-produced.

Public release

This full FDE Certification audio lesson is available publicly as part of GROW by Good Combinator.

Continue in GROW Skills Library: https://goodcombinator.com/grow/library

Episode metadata

Show: GROW by Good Combinator

Course: Course 4 - Hardening & Shipping

Lesson: 4.7

Season/Episode: 4/7

Runtime: 55:18

Access label: public-full-lesson

Source channel: spotify

Source audio: app/lessons/assets/course-4/4.7/4.7 audio podcast.m4a

Taxonomy: Domain=Reliability & Shipping; Career stage=Senior FDE; Skill level=Advanced; Asset type=Lesson; Outcome=Ship

CRM events: course_started, lesson_completed, cert_enrolled

Transcript and accessibility

Final transcript required before launch: https://goodcombinator.com/grow/courses/course-4/lesson-4.7/transcript

Accessibility requirement: reviewed audio, clear title, descriptive show notes, and transcript availability before launch.

Audio companion is AI-narrated using NotebookLM and disclosed here.

Credits

Host: Doug Liles

Producer: Good Combinator

Audio: NotebookLM AI narration (disclosed)