KNOWLEDGE NOTES

Knowledge Notes

Explore curated knowledge, course notes and methods, with their existing content and sources preserved.

This index lists complete English editions. Additional Chinese notes and bilingual updates remain available in the Chinese index.

350knowledge notes

AI Product Practice ／ Cross-source synthesis

Needs Analysis / JTBD / Product Core (Cross-Author Topic Synthesis)

Integrated needs analysis from 3 perspectives. yitang Truman (4-character formula for needs analysis: Decompose-Deduce-Evaluate-Calculate + 6 proficiency levels + JTBD one-pager L1-L4 + AI collaboration version) / yitang Product Core (4 keywords: User/Willing to Choose/Minimum/Solution + 3 principles + L3-L6 proficiency levels + Product Core Canvas) / Wang Huiwen Tsinghua Product Course (4 key traits of needs + supply-demand relationship + 4P + STP) / wiki-ai-pm-interview (user needs + data closed loop). Covers JTBD framework, micro-sense cultivation, and Top-Down/Bottom-Up ceiling calculation.

Requirements Analysis JTBD Product DefinitionEnglish edition

Product Design & UX ／ Yitang Course Notes

Yitang / Complete Demand Analysis System (4 Stages: Decompose-Deduce-Evaluate-Calculate + JTBD)

Complete notes for the 4-session practical course of the "Demand Analysis" module, a required entrepreneurship course from Yitang 01, plus a 1-page template. Lectured by Truman. The in-depth operating system for the first step "Demand" of Yitang's Five-Step Method: the four-character formula "Decompose-Deduce-Evaluate-Calculate" plus six proficiency levels. Covers ① Peel-and-decompose (Decompose) ② Scenario deduction (Deduce, JTBD framework) ③ Qualitative evaluation (Evaluate, beginner/intermediate/advanced) ④ Calculate the ceiling (Calculate, commercial space sizing). Supporting candy: 1-page template "From Task Insight to In-Depth Demand Deduction" (L1-L4 canvas, AI collaboration version)

Requirements Analysis JTBD User scenariosEnglish edition