Product Stagegate
Use when someone is building or running a new product (C-end or small-B SaaS, 0→1 / 1→10) and needs to know which stage it is at, whether it has passed the current gate, or what to do next. Symptoms include "should I start advertising / scaling now", "users love it on first try — is this PMF", "DAU is growing so we're good", "我做了访谈接下来做什么", confusing activation with retention, jumping stages, judg…
True Demand
Use when a user is working through a product idea, demand/market research, an MVP, a "nobody buys / nobody uses / nobody renews" problem, willingness-to-pay, pricing, go-to-market, stakeholder buy-in, an internal innovation project, a business-model question, or a post-mortem — and they have NOT pre-classified what kind of problem it is. Diagnoses whether the bottleneck is value, consensus, mode,…