"In designing a new stroller for Evenflo, the baby-care product company, the design team watched lots of parents transporting babies and toddlers around. Some discoveries led to purely functional improvements: larger wheels for better maneuverability, more space for shopping and family paraphemalia. But also we observed many parents and guardians stopping to connect with their child, practicing language and social skills as they named and reacted to people and things they encountered in the street. Because children were low down, they missed a lot of interaction. It was this observation, and not what parents told us, that revealed how a stroller would ideally support learning and bonding more effectively. So a key innovation, a higher seat for better interaction with the child, came about through recognition of the emotional experience of the parents and children, observed from their behavior."

「thoughtless acts?: Observations on Intuitive Design」 Jane Fulton Suri