Lean Start Up is a way of building new products, services and organisations that manages extreme uncertainty: will anyone buy this?
The old way? “Write a business plan, pitch it to investors, assemble a team, introduce a product, and start selling as hard as you can. And somewhere in this sequence of events, you’ll probably suffer a fatal setback.”
The new way: “Accept that you have a series of untested hypotheses—basically, good guesses – and first test these by getting out of the building and testing real, early products with real customers”