Founding as a Developer — Validate Before You Build
Judge interviews, cohorts, A/B tests and unit economics with numbers
중급 · Lessons 30 · Lab 9
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Curriculum
Problem Discovery & Customer Interviews — Count Past Behavior as Evidence
Hypotheses & MVP Scope — Judging a Smoke Test and RICE
How You Define an Active User Changes the Number — DAU, WAU, MAU, North Star
Retention Cohorts — Get the Denominator Wrong and Everything Is Wrong
Funnels & Growth Channels — Count People in Order, Then Attribute Conversions
A/B Testing — Sample Ratio, Power, Peeking and Multiple Comparisons
Pricing & Unit Economics — LTV, CAC, Payback and Contribution Margin
Early Team, Equity and Fundraising — Calculating Vesting, SAFEs and Dilution
Korean Startup Essentials — Incorporation, the Tax Calendar and Support Programs
Technical Debt vs. Shipping Speed — Measure the Interest, Decide When to Pay
Reference docs
TT Lab
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