The Lean Startup: The Million Copy Bestseller Driving Entrepreneurs to Success

by Eric Ries

measuring two things: the number of customers using products that didn’t exist three years ago and the percentage of revenue coming from offerings that did not exist three years ago.

Metcalfe’s law: the value of a network as a whole is proportional to the square of the number of participants.

innovative companies in finance.4 The company

amount of process to keep teams nimble

Thus, the ability to grow in the long term by using the paid engine requires a differentiated ability to monetize a certain set of customers.

most mistakes are caused by flawed systems, not bad people.

even established companies must struggle to find new sources of growth through disruptive innovation.