This document discusses developing and testing a product to solve problems mothers have caring for babies. It outlines developing hypotheses to solve problems like lack of fresh air and sunshine for babies, then testing the hypotheses by asking open-ended questions of mothers to understand if the problem is real and discover other potential problems. The document finds that the biggest problem mothers reported is constantly washing diapers. It then discusses the importance of testing a product with potential users, determining if users are willing to pay and how marketing and costs will work before a product is finalized and brought to market. The document also notes that problems may change over time so continued listening to users is important.