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 / 42 Zhangjing · Episode notes

From Directing AI to Accepting Results: Wang Wenfeng Revises His Agent Thesis

Listen: 00:56–13:46. Wang treats Manus and OpenClaw as two releases of capability. The former demonstrated reasoning models in research tasks; the latter connected coding to more tasks, communication channels, and memory. Messaging integration is not the whole explanation. The coding agent’s ability and the surrounding configuration, coordination, and presentation work together.

42 ZhangjingEpisode analysisAI Product PracticeEnglish edition
AI Product Practice / 42 Zhangjing · Episode notes

Gaotu’s AI Implementation: Serve Neglected Customers Before Discussing the Replacement of Top Salespeople

If a company connects AI throughout its processes and reports impressive coverage, has its business improved? Feng Cheng examines acquisition, conversion and delivery, then concentrates on leads already obtained: potential customers who receive slow responses or inadequate explanations.

42 ZhangjingEpisode analysisAI Product PracticeEnglish edition
AI Product Practice / Other Product, Design and Learning Materials

Going Global / AI Product Tools Collection Directory (Will's Product Hunt Ecosystem Tool Link Index Organized by Industry + Category, index_only)

This is a bookmark collection of going-global + AI product tool links exported by Will from Product Hunt / Notion. It is neither a design methodology nor a tutorial — each entry only contains "product name + official website URL + bilingual category title". It covers 26 major industry categories (AI Agents / LLMs / Voice AI / E-commerce / Finance / Design & Creativity / Engineering & Development / Productivity / Company Operations / Product R&D / Marketing & Sales / Social & Community / Consumer / Health & Fitness / Healthcare / Travel / Education / Real Estate / Industry / Government / Home / Physical Products / Plugins / Platforms / Web3, etc.) plus one Mobbin App/Web design reference list, with around 256 subcategories and approximately 2,600+ tool links. Its purpose is "when I need to find a certain type of tool (payment/translation/AI avatar/no-code website building/CRM…), quickly recall which benchmarkable references Will has bookmarked". Design knowledge such as i18n / global design patterns / ethics is not included here; see nngroup-patterns-ethics-global-emerging.

AI ToolsProduct DiscoveryTool directoryEnglish edition
AI Product Practice / 42 Zhangjing · Episode notes

Growth Is Part of the Product: ACE Studio’s Experiments With Pricing, Channels and Feedback

The title connects three months in the United States, conviction and ten-million-dollar ARR. Joe is more specific: ACE Studio then earned about US$800,000 monthly, compared with a previous level above US$80,000. Growth was slow for five weeks before a change from week six. Multiplying US$800,000 by twelve gives about US$9.6 million, a monthly run rate rather than proof of full-year collections or revenue entirely meeting recurring-revenue definit

42 ZhangjingEpisode analysisAI Product PracticeEnglish edition
AI Product Practice / 42 Zhangjing · Episode notes

Junior’s Team Agents: Knowing Company Information Also Means Knowing Who Must Not Hear It

A personal assistant centers its owner. A colleague must understand the company, projects and recipients. Xu connects Kuse’s changes with internally deployed agents and Junior’s definition. Memory ownership, action boundaries and accounting distinguish the product from additional chat windows.

42 ZhangjingEpisode analysisAI Product PracticeEnglish edition
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 AnalysisJTBDProduct DefinitionEnglish edition

newtype · AI Tool Stack in Practice and Evolution

Huang Yihe's AI tool stack usage and recommendation evolution from 2024-03 to 2026-05. Local model layer (Ollama/LM Studio/MLX) / Frontend layer (AnythingLLM/Open WebUI/LobeChat/ChatWise/Cherry Studio) / Knowledge base layer (MaxKB/RAGFlow/Obsidian Copilot) / Mobile (Enchanted/Apollo) / Configuration and performance (Mac mini M4 / 3060 / DeepSeek-R1 performance comparison) / Lao Huang's daily combo (Gemini + Grok + Raycast + Cursor + NotebookLM)

AI ToolsLocal ModelsTool selectionEnglish edition

newtype Planet Q&A Highlights (2025 H1)

30+ selected Q&A entries from Huang Yihe (newtype)'s Planet community from January to July 2025. Beginner learning path (Learning by doing: try all three models → ChatWise/Cherry Studio → OpenRouter) / Network conditions (US residential IP / Claude Code subscription vs API) / Multi-platform strategy (Domestic: WeChat Channels 68k + Bilibili & Douyin 40k combined + Xiaohongshu 10k / Overseas: YouTube + X + Medium + Reddit + newtype.pro) / Three reasons for not joining WeChat groups (filtering / education stage / time and energy) / AI Coding tool stack (Cursor + Claude Code complement each other) / Reasons for being bearish on Workflow vs bullish on MCP / Prompt House design philosophy (2-step MCP tool call) / Video production workflow (A Roll + B Roll + Screen Studio + OBS) / Three reasons for not subscribing to ChatGPT / RAG vs Fine-tune decision-making / Note structure Input-Processing-Output / Three things that don't rely on self-discipline (sense of mission + physical stamina + not forcing yourself). This is a "Q&A scenario" supplement to [[newtype-mindset-super-individual]] and [[newtype-knowledge-system]]

AI ToolsAI ProgrammingAgentsPromptsEnglish edition
AI Product Practice / Other Product, Design, and Learning Materials

Ruan Yifeng Weekly Tool Navigation: AI, Development, and Reading Leads (Historical Selection)

Find tools and reading leads from issues 394–413 of Ruan Yifeng's Science and Technology Enthusiast Weekly by task, with chapters and links to the author's original text; distinguish historical inclusion, missing issues, and actual adoption verification. This is not a latest-tools ranking.

Product ToolsTool SearchProduct DirectoryEnglish edition

Shensi Circle / Moves of Leading AI Companies (OpenAI/Anthropic/Google/Apple/Perplexity)

A collection of 71+ pieces on leading company moves from Shensi Circle. OpenAI (19 pieces / Sam Altman as Oppenheimer / Sora / OpenAI fund layout / Operator) / Anthropic (10 pieces / 130 billion revenue / moat = permissions / foray into finance / valuation doubled in three months surpassing OpenAI / marketing self-marketing / 80% retention of overseas talent) / Google (Gemini / Privacy Sandbox / AI rewriting the control layer) / Apple (AI iMessage / iOS integration) / Perplexity (6 pieces / 450 million ARR / 5 major growth engines in three and a half years / business strategy) / Microsoft (Entra ID / Security Copilot) / Karpathy (2 pieces). Covers strategic inflection points, business models, and competitive landscape of leading AI companies

AI CompaniesProduct UpdatesCompetitive landscapeEnglish edition