So when we reached this point, we had some other challenges, from both an engineering as well as a usability perspective, to make sure that we could make it used practically.
Kad smo došli do ove faze, pojavili su se drugi izazovi, iz inženjerske perspektive kao i iz perspektive upotrebljivosti, morali smo biti sigurni da  ćemo ga moći koristiti.