SourceKey points‣Do not build something if you do not know who the users are, (you should have spoken to them about the problem in the first place)‣Launch something bad, quickly and then talk to users immediately ‣Hold the solution loosely What is good about it?Hits the usual good points, stay close to customers, build a lean MVPUses some good (US) examplesWhat is bad about it?US-Unicorn centricTech-centric