MMina Demyan The Teardown Notebook

I break down what worked
— to find the system behind it.

Every business that works looks simple from the outside. I take it apart from the inside — the system, the offer, the psychology that made it click — then test what I learn in my own work.

01 Find → 02 Break down → 03 Test → 04 Share

A new teardown every week

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Teardowns01 — 03

01

The referral system that grew Dropbox 3900% — and why most copies fail

A working referral loop isn't "tell your friends." It's a two-sided incentive that's tracked. Here's the exact mechanism, the mistakes that kill it, and how to build one this week.

23 / 08 / 2026·7 min +3900% Growth
02

Domino's won the market with a sentence — not a better pizza

In 1984 Domino's did not claim tastier pizza. It made one measurable promise — "30 minutes or it's free" — and grew from ~200 stores to 5,000. Here is the risk-reversal system behind it.

23 / 08 / 2026·8 min 200 → 5,000 Stores
03

Superhuman found product-market fit with one question — the 40% rule

Sean Ellis turned product-market fit into a single question. Superhuman used it to go from 22% to 58% before spending a dollar on growth — here's the mechanism, and how to run it on your last 30 customers.

25 / 08 / 2026·7 min 22% → 58% Fit score