Concept
Thiel's Law
Thiel's Law is Peter Thiel's half-joking rule that a startup messed up at its foundation cannot be fixed, so the choice of cofounders and the split of ownership, control and pay must be settled before anything else.
In Zero to One, Thiel names this rule after himself with a wink. The point is serious, and it is about timing, not doom. The first decisions are who starts the company with you, who owns what, who decides and how people are paid. Those decisions get baked into legal documents, daily habits and relationships. Every later hire and funding round is stacked on top of them, so a crack at the bottom spreads upward instead of healing. Thiel separates three things: - **Ownership:** who holds equity. - **Possession:** who runs the company day to day. - **Control:** who formally governs, usually the board. When these drift apart, conflict follows. He compares picking a cofounder to marriage. Shared history and how well you actually work together matter more than raw talent. Fixing these things early is cheap. Fixing them later costs friendships, money and sometimes the company.
A real-life example
Two friends start a meal-planning app and split equity 50/50 on a handshake. Six months later, Maya has quit her job and works full-time, while Jon still codes on weekends. There is no vesting and no agreed decision-maker. When an investor shows interest, they can't agree on terms, and the part-timer owns half of everything. Four-year vesting and a clear role split on day one would have made this an afternoon's conversation.
How to use it
- 1Before writing code or taking money, answer three questions in writing with your cofounders: who owns what, who decides what, and how each person is paid.
- 2Put equity on a vesting schedule (four years with a one-year cliff is common), so ownership follows real commitment rather than first-day enthusiasm.
- 3Keep the founding team full-time and the board small. If someone can't commit fully, make them an advisor or contractor instead of a cofounder.