The Lean Startup asks people to start measuring their productivity differently. Because startups often accidentally build something nobody wants, it … - Eric Ries

The goal of a startup is to figure out the right thing to build — the thing customers want and will pay for — as quickly as possible.

the Lean Startup is a new way of looking at the development of innovative new products that emphasizes fast iteration and customer insight, a huge vision, and great ambition, all at the same time.

This is true startup productivity: systematically figuring out the right things to build.

The goal of a startup is to figure out the right thing to build — the thing customers want and will pay for — as quickly as possible. In other words, the Lean Startup is a new way of looking at the development of innovative new products that emphasizes fast iteration and customer insight, a huge vision, and great ambition, all at the same time.

Because startups often accidentally build something nobody wants, it doesn’t matter much if they do it on time and on budget.

value in a startup is not the creation of stuff, but rather validated learning about how to build a sustainable business.

Failure is a prerequisite to learning.

Compare two startups. The first company sets out with a clear baseline metric, a hypothesis about what will improve that metric, and a set of experiments designed to test that hypothesis. The second team sits around debating what would improve the product, implements several of those changes at once, and celebrates if there is any positive increase in any of the numbers. Which startup is more likely to be doing effective work and achieving lasting results?