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.
15 essential articles from the Nielsen Norman Group persona knowledge base. A persona = compressing "abstract user groups" into a small number of fictional individuals that the team can remember and empathize with, used to align design perspectives. Essence (depict inner motivations, not external behaviors / not demographics) / Three types (Lightweight Proto, Qualitative, Statistical; qualitative is the optimal choice for most teams) / Scope and hierarchy (broad vs narrow · organization → business line → product → project; personas cannot be one-size-fits-all) / What information to include when creating · team collaboration · editable formats / Personas vs Archetypes vs Jobs To Be Done (JTBD) vs Customer Segments (one table to distinguish the four tools) / Three usage methods (feature priority matrix · scenario mapping workshop · segmented data analysis) / Maintenance (living document · when to update · update frequency is positively correlated with impact) / 5 major failure causes + solutions / Underlying principle: design for the users you actually have, not ideal users / Special population: designing and testing for children.
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)
