english: The first is that this product works well because we were effectively able to combine rigorous engineering science and analysis with user-centered design focused on the social and usage and economic factors important to wheelchair users in the developing countries.
non_english: Prvo je to da ovaj proizvod dobro funkcioniše jer smo uspeli da efikasno spojimo rigoroznu nauku mašinstva i analizu sa dizajnom usredsređenim na korisnika fokusiranu na društvene, ekonomske i faktore korišćenja koji su bitni korisnicima invalidskih kolica u zemljama u razvoju.