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

Customers don't know what they want. There's plenty of good psychology research that shows that people are not able to accurately predict how they would behave in the future. So asking them, 'Would you buy my product if it had these three features?' or 'How would you react if we changed our product this way?' is a waste of time. They don't know.

The minimum viable product is that version of a new product which allows a team to collect the maximum amount of validated learning about customers with the least effort.

We must learn what customers really want, not what they say they want or what we think they should want.

A startup is a human institution designed to deliver a new product or service under conditions of extreme uncertainty.

If you don't know who your customer is, you don't know what quality is.

Most companies are busy making their products worse, not better. Updating is almost always a disaster.