There's a lot of research and a lot of failure, trial and error -- I guess, more error -- so we don't always get it right, and it takes a while for us to be able to explain that to people.
多くのリサ−チや 試行錯誤が必要で 特に多くの失敗はつきものです 人に説明するのにも 大変時間がかかります