The Arc PMF Terrifying Questions Framework

Four “terrifying questions” replace vague PMF intuition with a structured test.
Q1: Right to exist — founder-market fit + authentic category insight.
- Nubank’s Vélez pressure-tested Brazilian banking for months; wedge = credit cards.
Q2: Do people care enough? — cold outreach hit rate, willingness to pay.
- DoorDash did 300-400 conversations; first customer: Palo Alto macaroon shop.
- Depth over breadth: 1-in-10 genuine interest = problem doesn’t resonate.
Q3: Does product change behavior? — lightbulb moments, sticky features, virality.
- Dropbox found file-sharing as viral hook; optimized sharing UX obsessively.
Q4: Will customers pay enough? — target price, no pushback, path to $500M.
- Square gave hardware free, charged transaction %; transformed unit economics.
PMF isn’t a destination — revisit all four questions for every new segment.
- Robinhood (public, $1B+ revenue) re-anchored on active traders, not amateurs.

X discourse

@dunkhippo33: “Product-market fit isn’t what most people think it is. After studying PMF for 15 years and observing ~1000 companies” (275 likes)
@alysha_lobo: “‘We invest at paper napkin stage’ is overused… most decisions supported by proxies — early signals, pedigree.” (314 likes)
@GBDallaRizza: “jason cohen built a list of extreme questions… ‘if you could only ship one thing this year, what would it be?’” (0 likes)

Team Sequoia (Arc program) · 2025-02-12 · Read on sequoiacap.com