The big question of our time is not Can it be built? but Should it be built? This places us in an unusual historical moment: our future prosperity de… - Eric Ries

We have the capacity to build almost anything we can imagine. The big question of our time is not Can it be built? but Should it be built? This

a new breed of designers is developing brand-new techniques under the banner of Lean User Experience (Lean UX). They recognize that the customer archetype is a hypothesis, not a fact. The customer profile should be considered provisional until the strategy has shown via validated learning that we can serve this type of customer in a sustainable way.

Before new products can be sold successfully to the mass market, they have to be sold to early adopters. These people are a special breed of customer. They accept — in fact prefer — an 80 percent solution; you don’t need a perfect solution to capture their interest.4

Every extra feature is a form of waste, and if we delay the test for these extra features, it comes with a tremendous potential cost in terms of learning and cycle time.