Over the past 13 years, Nakagawa has worked with companies as big as Toyota and Motorola, developing with them 250 products. Not all of them have caught on, and for those that didn't the reasons generally were high costs because of extensive studies, or consumers just not "getting" them and thus not buying them.
13 年來，中川聰持續與日本豐田汽車、摩托羅拉等企業合作，一共開發了 250 件商品，但並不是所有商品都被使用者認同，不成功的原因包括，花太多時間在調查，以致成本增加、售價太高，或者銷售者對產品不了解、不會銷售等。