New product ideas are commonly born of instinct, hunches and past experience; an adventure into the unknown. Early requirements are therefore often imperfect lists of nice-to-haves, can-we-do-this, grand vision items that may not always be practical or feasible in a lean startup. In this talk we’ll introduce sketching as an early collaborative step in the process of facilitating buy-in and evolving ideas into a map for a minimum viable product.