I strongly recommend that startup teams be completely cross-functional, that is, have full-time representation from every functional department in th… - Eric Ries

Innovation accounting begins by turning the leap-of-faith assumptions discussed in Chapter 5 into a quantitative financial model. Every business plan has some kind of model associated with it, even if it’s written on the back of a napkin. That model provides assumptions about what the business will look like at a successful point in the future.

The problem for startups and large companies alike is that employees often follow the products they develop as they move from phase to phase. A common practice is for the inventor of a new product or feature to manage the subsequent resources, team, or division that ultimately commercializes it. As a result, strong creative managers wind up getting stuck working on the growth and optimization of products rather than creating new ones.

Startup success is not a consequence of good genes or being in the right place at the right time. Startup success can be engineered by following the right process, which means it can be learned, which means it can be taught.