Make stage-appropriate decisions. Whether allocating equity, seeking funding, contacting prospective customers for feedback, building wireframes, or growing your team, moving too early or too late can yield devastating consequences. We have created models in each chapter that reflect the key challenges in Human, Marketing, Technical, and Strategic Oceans for Pre-Revenue, MVP, Launch and Early Growth, and Scalable Product and Business Model stages. As you map your journey and navigate uncertainty, don’t create additional hidden debts by overextending into future stages. Trying to raise too much money, over-hiring, making promises to customers that you cannot keep, and overbuilding technology can all sink the overly ambitious startup. Similarly, not investing in people, markets, and products can have a similar effect if delayed too long.