In a startup no facts exist inside the building, only opinions.

We now know that something between 85 and 90 percent of most software product features are unwanted and unneeded by customers. That is an enourmous ammount of waste of time and money that ends up on the floor.

At the end of the day, you can decide whether you want to be an employee with a great attendance record, getting promoted to ever better titles and working on interesting projects - or whether you want to attempt to do something spectacular - this be or do should be a question you never stop asking yourself - for the next 20 years, and beyond.

Startups don’t fail because they lack a product; they fail because they lack customers and a profitable business model.

Build and they will come’ is not a strategy, it’s a prayer.

A business model describes how your company creates, delivers and captures value.

Using the Product Development Waterfall diagram for Customer Development activities is like using a clock to tell the temperature. They both measure something, but not the thing you wanted.