Every product is built upon a belief system. We make assumptions about the customer, their need, the best solution, the business model, etc. We like to believe that our opinions are facts, but in truth they are mere hypotheses abou the world. If we are truly "lean", our mission is to identify our beliefs, separate out the riskiests assumptions, and invalidate the vulnerable ones as quickly as possible. In this talk, Giff Constable, a repeat entrepreneur and current Managing Director at Neo, will share 4 tactics for thinking holistically about your idea and clearly identifying, prioritizing and tackling your assumptions.