One of the riskiest assumptions for any new product or feature is that customers actually want it. Although product leaders can propose numerous ‘lean’ methodologies to experiment inexpensively with new concepts before fully engineering them, anything short of launching a product or feature and monitoring its performance over time in the market is, by definition, not 100% accurate. That leaves us with a dangerously wide spectrum of user research strategies, and an even wider range of opinions for determining when